For "scroll to bottom" button in chat, instead of glass, tint badge.

Signal/ConversationView/CVViewState.swift

@@ -184,8 +184,9 @@ extension ConversationViewController {
         set {
             viewState.conversationStyle = newValue
             if #available(iOS 26, *) {
-                viewState.scrollDownButton.tintColor = newValue.chatColorValue.asLiquidGlassTintColor()
-                viewState.scrollToNextMentionButton.tintColor = newValue.chatColorValue.asLiquidGlassTintColor()
+                let tintColor = newValue.chatColorValue.asChatUIElementTintColor()
+                viewState.scrollDownButton.badgeTintColor = tintColor
+                viewState.scrollToNextMentionButton.badgeTintColor = tintColor
             }
         }
     }

Signal/ConversationView/ConversationInputToolbar.swift

@@ -191,7 +191,7 @@ public class ConversationInputToolbar: UIView, QuotedReplyPreviewDelegate {
     func update(conversationStyle: ConversationStyle) {
         self.conversationStyle = conversationStyle
         if #available(iOS 26, *), let sendButton = trailingEdgeControl as? UIButton {
-            sendButton.tintColor = conversationStyle.chatColorValue.asLiquidGlassTintColor()
+            sendButton.tintColor = conversationStyle.chatColorValue.asChatUIElementTintColor()
         }
     }
 
@@ -489,7 +489,7 @@ public class ConversationInputToolbar: UIView, QuotedReplyPreviewDelegate {
                 },
                 accessibilityIdentifier: UIView.accessibilityIdentifier(in: self, name: "sendButton"),
             )
-            button.tintColor = conversationStyle.bubbleChatColorOutgoing.asLiquidGlassTintColor()
+            button.tintColor = conversationStyle.bubbleChatColorOutgoing.asChatUIElementTintColor()
             return button
         }
 

Signal/ConversationView/ConversationScrollButton.swift

@@ -18,13 +18,18 @@ public class ConversationScrollButton: UIButton {
         }
     }
 
+    var badgeTintColor: UIColor! {
+        get { unreadBadge.backgroundColor ?? UIColor.Signal.accent }
+        set { unreadBadge.backgroundColor = newValue ?? UIColor.Signal.accent }
+    }
+
     init(iconName: String) {
         self.iconName = iconName
         super.init(frame: .zero)
 
         var configuration: UIButton.Configuration?
         if #available(iOS 26, *) {
-            configuration = .prominentGlass()
+            configuration = .glass()
         }
         if configuration == nil {
             configuration = .gray()
@@ -50,6 +55,14 @@ public class ConversationScrollButton: UIButton {
         addUnreadLabel()
     }
 
+    override public func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
+        super.traitCollectionDidChange(previousTraitCollection)
+
+        if previousTraitCollection?.userInterfaceStyle != traitCollection.userInterfaceStyle {
+            applyUnreadBadgeStroke()
+        }
+    }
+
     required init?(coder: NSCoder) {
         fatalError("init(coder:) has not been implemented")
     }
@@ -95,5 +108,16 @@ public class ConversationScrollButton: UIButton {
             unreadBadge.centerXAnchor.constraint(equalTo: centerXAnchor),
             unreadBadge.bottomAnchor.constraint(equalTo: topAnchor, constant: pillViewOverlap),
         ])
+
+        applyUnreadBadgeStroke()
+    }
+
+    private func applyUnreadBadgeStroke() {
+        let strokeColor = switch traitCollection.userInterfaceStyle {
+        case .dark: UIColor(white: 1, alpha: 0.1)
+        default: UIColor(white: 0, alpha: 0.1)
+        }
+        unreadBadge.layer.borderWidth = 1
+        unreadBadge.layer.borderColor = strokeColor.cgColor
     }
 }

SignalUI/Appearance/ColorOrGradient+SignalUI.swift

@@ -115,7 +115,7 @@ public extension UIColor {
 @available(iOS 26, *)
 public extension ColorOrGradientValue {
 
-    func asLiquidGlassTintColor() -> UIColor {
+    func asChatUIElementTintColor() -> UIColor {
         let bubbleColor: UIColor = {
             switch self {
             case .transparent, .blur: