Add strings.

en.json

@@ -124,10 +124,17 @@
                 "appearance": {
                     "title": "Appearance",
                     "theme": "Theme",
+                    "display": {
+                        "default": "Default",
+                        "compact": "Compact",
+                        "default_description": "Beautiful, sleek and modern.",
+                        "compact_description": "Long live the IRC."
+                    },
                     "color": {
                         "light": "light",
                         "dark": "dark"
                     },
+                    "accent_selector": "Accent Colour",
                     "message_display": "Message Display",
                     "advanced": "Advanced Options",
                     "overrides": "Theme Overrides",