diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index ded4726..b58d1fc 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -22,7 +22,8 @@ android {
 
     buildTypes {
         release {
-            isMinifyEnabled = false
+            isMinifyEnabled = true
+            isShrinkResources = true
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
diff --git a/app/src/main/java/eu/steffo/twom/room/MemberListItem.kt b/app/src/main/java/eu/steffo/twom/room/MemberListItem.kt
index a039f68..ebfe572 100644
--- a/app/src/main/java/eu/steffo/twom/room/MemberListItem.kt
+++ b/app/src/main/java/eu/steffo/twom/room/MemberListItem.kt
@@ -11,7 +11,6 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
-import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import eu.steffo.twom.R
@@ -21,10 +20,12 @@ import eu.steffo.twom.theme.colorRoleLater
 import eu.steffo.twom.theme.colorRoleMaybe
 import eu.steffo.twom.theme.colorRoleNoway
 import eu.steffo.twom.theme.colorRoleSure
+import eu.steffo.twom.theme.colorRoleUnknown
 import eu.steffo.twom.theme.iconRoleLater
 import eu.steffo.twom.theme.iconRoleMaybe
 import eu.steffo.twom.theme.iconRoleNoway
 import eu.steffo.twom.theme.iconRoleSure
+import eu.steffo.twom.theme.iconRoleUnknown
 import org.matrix.android.sdk.api.session.getUser
 
 // TODO: Check this with brain on
@@ -41,18 +42,36 @@ fun MemberListItem(
 
     val user = session?.getUser(memberId)
 
-    // TODO: These are going to get cached many times...
-    val crSure = colorRoleSure()
-    val crLater = colorRoleLater()
-    val crMaybe = colorRoleMaybe()
-    val crNoway = colorRoleNoway()
+    val colorRole = when (rsvpAnswer) {
+        RSVPAnswer.SURE -> colorRoleSure()
+        RSVPAnswer.LATER -> colorRoleLater()
+        RSVPAnswer.MAYBE -> colorRoleMaybe()
+        RSVPAnswer.NOWAY -> colorRoleNoway()
+        null -> colorRoleUnknown()
+    }
+    val iconRole = when (rsvpAnswer) {
+        RSVPAnswer.SURE -> iconRoleSure
+        RSVPAnswer.LATER -> iconRoleLater
+        RSVPAnswer.MAYBE -> iconRoleMaybe
+        RSVPAnswer.NOWAY -> iconRoleNoway
+        null -> iconRoleUnknown
+    }
+    val iconDescription = when (rsvpAnswer) {
+        RSVPAnswer.SURE -> stringResource(R.string.room_rsvp_sure_response)
+        RSVPAnswer.LATER -> stringResource(R.string.room_rsvp_later_response)
+        RSVPAnswer.MAYBE -> stringResource(R.string.room_rsvp_maybe_response)
+        RSVPAnswer.NOWAY -> stringResource(R.string.room_rsvp_noway_response)
+        null -> stringResource(R.string.room_rsvp_unknown_response)
+    }
 
     ListItem(
-        modifier = Modifier.clickable {
+        modifier = modifier.clickable {
             onClickMember(memberId)
         },
         headlineContent = {
-            Text(user?.displayName ?: stringResource(R.string.user_unresolved_name))
+            Text(
+                text = user?.displayName ?: stringResource(R.string.user_unresolved_name),
+            )
         },
         leadingContent = {
             Box(
@@ -67,53 +86,17 @@ fun MemberListItem(
             }
         },
         trailingContent = {
-            when (rsvpAnswer) {
-                RSVPAnswer.SURE -> {
-                    Icon(
-                        imageVector = iconRoleSure,
-                        contentDescription = stringResource(R.string.room_rsvp_sure_label),
-                        tint = crSure.value,
-                    )
-                }
-
-                RSVPAnswer.LATER -> {
-                    Icon(
-                        imageVector = iconRoleLater,
-                        contentDescription = stringResource(R.string.room_rsvp_later_label),
-                        tint = crLater.value,
-                    )
-                }
-
-                RSVPAnswer.MAYBE -> {
-                    Icon(
-                        imageVector = iconRoleMaybe,
-                        contentDescription = stringResource(R.string.room_rsvp_maybe_label),
-                        tint = crMaybe.value,
-                    )
-                }
-
-                RSVPAnswer.NOWAY -> {
-                    Icon(
-                        imageVector = iconRoleNoway,
-                        contentDescription = stringResource(R.string.room_rsvp_later_label),
-                        tint = crNoway.value,
-                    )
-                }
-
-                null -> {}
-            }
+            Icon(
+                imageVector = iconRole,
+                contentDescription = iconDescription,
+                tint = colorRole.value,
+            )
         },
         supportingContent = {
             if (rsvpComment != "") {
                 Text(
                     text = rsvpComment,
-                    color = when (rsvpAnswer) {
-                        RSVPAnswer.SURE -> crSure.value
-                        RSVPAnswer.LATER -> crLater.value
-                        RSVPAnswer.MAYBE -> crMaybe.value
-                        RSVPAnswer.NOWAY -> crNoway.value
-                        null -> Color.Unspecified
-                    }
+                    color = colorRole.value,
                 )
             }
         },
diff --git a/app/src/main/java/eu/steffo/twom/room/RoomActivityAnswerForm.kt b/app/src/main/java/eu/steffo/twom/room/RoomActivityAnswerForm.kt
new file mode 100644
index 0000000..fd74396
--- /dev/null
+++ b/app/src/main/java/eu/steffo/twom/room/RoomActivityAnswerForm.kt
@@ -0,0 +1,10 @@
+package eu.steffo.twom.room
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.tooling.preview.Preview
+
+@Composable
+@Preview
+fun RoomActivityAnswerForm() {
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/eu/steffo/twom/room/RoomActivityChip.kt b/app/src/main/java/eu/steffo/twom/room/RoomActivityChip.kt
index e912301..8f5e096 100644
--- a/app/src/main/java/eu/steffo/twom/room/RoomActivityChip.kt
+++ b/app/src/main/java/eu/steffo/twom/room/RoomActivityChip.kt
@@ -1,28 +1,27 @@
 package eu.steffo.twom.room
 
-import androidx.compose.material3.ElevatedFilterChip
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.FilterChip
 import androidx.compose.material3.FilterChipDefaults
 import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.unit.dp
 import eu.steffo.twom.theme.StaticColorRole
 import eu.steffo.twom.theme.TwoMPadding
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun RoomActivityChip(
-    modifier: Modifier = Modifier,
     selected: Boolean = false,
     onClick: () -> Unit = {},
     text: String,
     imageVector: ImageVector,
     colorRole: StaticColorRole,
 ) {
-    ElevatedFilterChip(
+    FilterChip(
         modifier = TwoMPadding.chips,
         selected = selected,
         onClick = onClick,
@@ -35,15 +34,21 @@ fun RoomActivityChip(
         label = {
             Text(
                 text = text,
-                style = MaterialTheme.typography.labelLarge,
+                style = MaterialTheme.typography.bodyLarge,
             )
         },
-        colors = FilterChipDefaults.elevatedFilterChipColors(
+        colors = FilterChipDefaults.filterChipColors(
             iconColor = colorRole.value,
             labelColor = colorRole.value,
             selectedContainerColor = colorRole.valueContainer,
             selectedLeadingIconColor = colorRole.onValueContainer,
             selectedLabelColor = colorRole.onValueContainer,
         ),
+        border = FilterChipDefaults.filterChipBorder(
+            borderColor = MaterialTheme.colorScheme.surfaceVariant,
+            selectedBorderColor = colorRole.onValueContainer,
+            borderWidth = 1.dp,
+            selectedBorderWidth = 1.dp,
+        )
     )
 }
\ No newline at end of file
diff --git a/app/src/main/java/eu/steffo/twom/room/RoomActivityCommentField.kt b/app/src/main/java/eu/steffo/twom/room/RoomActivityCommentField.kt
new file mode 100644
index 0000000..7847e23
--- /dev/null
+++ b/app/src/main/java/eu/steffo/twom/room/RoomActivityCommentField.kt
@@ -0,0 +1,70 @@
+package eu.steffo.twom.room
+
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.material3.LocalContentColor
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.OutlinedTextFieldDefaults
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import eu.steffo.twom.R
+import eu.steffo.twom.theme.colorRoleLater
+import eu.steffo.twom.theme.colorRoleMaybe
+import eu.steffo.twom.theme.colorRoleNoway
+import eu.steffo.twom.theme.colorRoleSure
+import eu.steffo.twom.theme.colorRoleUnknown
+
+@Composable
+@Preview
+fun RoomActivityCommentField(
+    modifier: Modifier = Modifier,
+    value: String = "",
+    onValueChange: (value: String) -> Unit = {},
+    rsvpAnswer: RSVPAnswer? = null,
+) {
+    val colorRole = when (rsvpAnswer) {
+        RSVPAnswer.SURE -> colorRoleSure()
+        RSVPAnswer.LATER -> colorRoleLater()
+        RSVPAnswer.MAYBE -> colorRoleMaybe()
+        RSVPAnswer.NOWAY -> colorRoleNoway()
+        null -> colorRoleUnknown()
+    }
+
+    OutlinedTextField(
+        modifier = Modifier.fillMaxWidth(),
+        value = value,
+        onValueChange = onValueChange,
+        singleLine = true,
+        shape = MaterialTheme.shapes.small,
+        placeholder = {
+            Text(
+                text = when (rsvpAnswer) {
+                    RSVPAnswer.SURE -> stringResource(R.string.room_rsvp_sure_placeholder)
+                    RSVPAnswer.LATER -> stringResource(R.string.room_rsvp_later_placeholder)
+                    RSVPAnswer.MAYBE -> stringResource(R.string.room_rsvp_maybe_placeholder)
+                    RSVPAnswer.NOWAY -> stringResource(R.string.room_rsvp_noway_placeholder)
+                    null -> stringResource(R.string.room_rsvp_unknown_placeholder)
+                }
+            )
+        },
+        colors = if (rsvpAnswer != null) {
+            OutlinedTextFieldDefaults.colors(
+                focusedContainerColor = colorRole.valueContainer,
+                unfocusedContainerColor = colorRole.valueContainer,
+                focusedTextColor = colorRole.onValueContainer,
+                unfocusedTextColor = colorRole.onValueContainer,
+                focusedBorderColor = colorRole.onValueContainer,
+                unfocusedBorderColor = colorRole.onValueContainer.copy(alpha = 0.3f),
+                cursorColor = colorRole.onValueContainer,
+            )
+        } else {
+            OutlinedTextFieldDefaults.colors(
+                focusedBorderColor = LocalContentColor.current,
+                unfocusedBorderColor = MaterialTheme.colorScheme.surfaceVariant,
+            )
+        },
+    )
+}
diff --git a/app/src/main/java/eu/steffo/twom/room/RoomActivityContent.kt b/app/src/main/java/eu/steffo/twom/room/RoomActivityContent.kt
index 25638ec..d7ef1b2 100644
--- a/app/src/main/java/eu/steffo/twom/room/RoomActivityContent.kt
+++ b/app/src/main/java/eu/steffo/twom/room/RoomActivityContent.kt
@@ -1,19 +1,17 @@
 package eu.steffo.twom.room
 
+import RoomActivityUpdateButton
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
-import androidx.compose.material3.TextField
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import eu.steffo.twom.R
@@ -37,7 +35,7 @@ fun RoomActivityContent(
             Row(TwoMPadding.base) {
                 Text(
                     text = stringResource(R.string.room_topic_title),
-                    style = MaterialTheme.typography.titleMedium
+                    style = MaterialTheme.typography.labelLarge,
                 )
             }
             Row(TwoMPadding.base) {
@@ -47,7 +45,7 @@ fun RoomActivityContent(
             Row(TwoMPadding.base) {
                 Text(
                     text = stringResource(R.string.room_rsvp_title),
-                    style = MaterialTheme.typography.titleMedium
+                    style = MaterialTheme.typography.labelLarge,
                 )
             }
 
@@ -56,24 +54,25 @@ fun RoomActivityContent(
                 onChange = { rsvpAnswer = it }
             )
 
-            if (rsvpAnswer != null) {
-                Row(Modifier.padding(start = 10.dp, end = 10.dp, bottom = 10.dp)) {
-                    TextField(
-                        modifier = Modifier.fillMaxWidth(),
-                        singleLine = true,
-                        value = rsvpComment,
-                        onValueChange = { rsvpComment = it },
-                        placeholder = {
-                            Text(LocalContext.current.getString(R.string.room_rsvp_comment_placeholder))
-                        },
-                    )
-                }
+            Row(Modifier.padding(start = 10.dp, end = 10.dp)) {
+                RoomActivityCommentField(
+                    value = rsvpComment,
+                    onValueChange = { rsvpComment = it },
+                    rsvpAnswer = rsvpAnswer,
+                )
+            }
+
+            Row(Modifier.padding(all = 10.dp)) {
+                RoomActivityUpdateButton(
+                    onClick = {},
+                    rsvpAnswer = rsvpAnswer,
+                )
             }
 
             Row(TwoMPadding.base) {
                 Text(
                     text = stringResource(R.string.room_invitees_title),
-                    style = MaterialTheme.typography.titleMedium
+                    style = MaterialTheme.typography.labelLarge,
                 )
             }
 
@@ -82,11 +81,7 @@ fun RoomActivityContent(
                 MemberListItem(
                     memberId = LocalSession.current!!.myUserId,
                     rsvpAnswer = rsvpAnswer,
-                    rsvpComment = if (rsvpAnswer != null) {
-                        rsvpComment
-                    } else {
-                        ""
-                    },
+                    rsvpComment = rsvpComment,
                 )
 
                 roomSummary.otherMemberIds.forEach {
diff --git a/app/src/main/java/eu/steffo/twom/room/RoomActivityUpdateButton.kt b/app/src/main/java/eu/steffo/twom/room/RoomActivityUpdateButton.kt
new file mode 100644
index 0000000..9e1ee5c
--- /dev/null
+++ b/app/src/main/java/eu/steffo/twom/room/RoomActivityUpdateButton.kt
@@ -0,0 +1,27 @@
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import eu.steffo.twom.R
+import eu.steffo.twom.room.RSVPAnswer
+
+@Composable
+@Preview
+fun RoomActivityUpdateButton(
+    onClick: () -> Unit = {},
+    rsvpAnswer: RSVPAnswer? = null,
+) {
+    Button(
+        modifier = Modifier.fillMaxWidth(),
+        onClick = onClick,
+        shape = MaterialTheme.shapes.small,
+    ) {
+        Text(
+            text = stringResource(R.string.room_update_label)
+        )
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/eu/steffo/twom/theme/colorRoleUnknown.kt b/app/src/main/java/eu/steffo/twom/theme/colorRoleUnknown.kt
new file mode 100644
index 0000000..1174dc3
--- /dev/null
+++ b/app/src/main/java/eu/steffo/twom/theme/colorRoleUnknown.kt
@@ -0,0 +1,14 @@
+package eu.steffo.twom.theme
+
+import androidx.compose.material3.LocalContentColor
+import androidx.compose.runtime.Composable
+
+@Composable
+fun colorRoleUnknown(): StaticColorRole {
+    return StaticColorRole(
+        value = LocalContentColor.current,
+        onValue = LocalContentColor.current,
+        valueContainer = LocalContentColor.current,
+        onValueContainer = LocalContentColor.current,
+    )
+}
diff --git a/app/src/main/java/eu/steffo/twom/theme/iconRoleUnknown.kt b/app/src/main/java/eu/steffo/twom/theme/iconRoleUnknown.kt
new file mode 100644
index 0000000..7c16def
--- /dev/null
+++ b/app/src/main/java/eu/steffo/twom/theme/iconRoleUnknown.kt
@@ -0,0 +1,6 @@
+package eu.steffo.twom.theme
+
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.Circle
+
+val iconRoleUnknown = Icons.Outlined.Circle
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index af007d5..1a938fb 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -23,7 +23,7 @@
     <string name="main_account_label">My account</string>
     <string name="main_account_logout_text">Logout</string>
     <string name="main_roomlist_empty_text">There are no rooms.</string>
-    <string name="loading">Loading...</string>
+    <string name="loading">Loading…</string>
     <string name="main_efab_create_text">New</string>
     <string name="main_notloggedin_text_2">Log into your Matrix account by clicking the icon on the top right of the screen.</string>
     <string name="main_account_login_text">Login</string>
@@ -39,7 +39,7 @@
     <string name="room_invitees_title">Invitees</string>
     <string name="room_rsvp_title">Your reply</string>
     <string name="room_rsvp_sure_label">Sure!</string>
-    <string name="room_rsvp_later_label">I\'ll be late...</string>
+    <string name="room_rsvp_later_label">I\'ll be late…</string>
     <string name="room_rsvp_maybe_label">Maybe?</string>
     <string name="room_rsvp_noway_label">Nope.</string>
     <string name="room_topic_title">About this party</string>
@@ -48,5 +48,11 @@
     <string name="room_rsvp_later_response">Will arrive late</string>
     <string name="room_rsvp_maybe_response">Will maybe partecipate</string>
     <string name="room_rsvp_noway_response">Won\'t be there</string>
-    <string name="room_rsvp_comment_placeholder">Leave a comment...</string>
+    <string name="room_rsvp_sure_placeholder">Anything to add?</string>
+    <string name="room_rsvp_later_placeholder">Why will you be late?</string>
+    <string name="room_rsvp_maybe_placeholder">What will determine your partecipation?</string>
+    <string name="room_rsvp_noway_placeholder">Why won\'t you partecipate?</string>
+    <string name="room_rsvp_unknown_response">Hasn\'t answered yet</string>
+    <string name="room_rsvp_unknown_placeholder">Leave a comment…</string>
+    <string name="room_update_label">Update</string>
 </resources>
\ No newline at end of file