Refresh themes and styling (#394)

* consolidate themes

* update and tweak styles, add border styling

* add borders between video and chat

* tweak heights

* improve reply threads
- taller new design
- can now tap parent's reply
- fix crash when tapping self

* tweak border colors

* tweak theme

* tweak theme

* tweak theme

* add accent color picker in settings

* overhaul colors and styles

* remove print

* add divider to chat user modal and revert height

* increase deleted message opacity

* revert highlight color

* tweak color

* tweak colors

* tweak padding

* tweak padding

* tweak placeholder color

* revert input fill color

* use error color

pubspec.lock

@@ -411,6 +411,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.4.1"
+  flutter_colorpicker:
+    dependency: "direct main"
+    description:
+      name: flutter_colorpicker
+      sha256: "969de5f6f9e2a570ac660fb7b501551451ea2a1ab9e2097e89475f60e07816ea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
   flutter_launcher_icons:
     dependency: "direct dev"
     description:
@@ -1247,10 +1255,10 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: f652077d0bdf60abe4c1f6377448e8655008eef28f128bc023f7b5e8dfeb48fc
+      sha256: "5c5f338a667b4c644744b661f309fb8080bb94b18a7e91ef1dbd343bed00ed6d"
       url: "https://pub.dev"
     source: hosted
-    version: "14.2.4"
+    version: "14.2.5"
   wakelock_plus:
     dependency: "direct main"
     description: