Add Mastodon-missing theme

app/javascript/styles/missing-contrast.scss

+@import 'contrast/variables';
+@import 'application';
+@import 'contrast/diff';
+@import 'missing/diff';

app/javascript/styles/missing-light.scss

+@import 'mastodon-light/variables';
+@import 'application';
+@import 'mastodon-light/diff';
+@import 'missing/diff';

app/javascript/styles/missing.scss

+@import 'application';
+@import 'missing/diff';

app/javascript/styles/missing/diff.scss

+div.account__avatar,
+.account__avatar-overlay-base,
+.account__avatar-overlay-overlay {
+  background-image:url(//fedibird.com/avatars/original/missing.png) !important;
+}

config/locales/en.yml

@@ -1421,6 +1421,9 @@ en:
     instance-ticker-type-2: Mastodon instance ticker Type-2 (Dark / Favicon Images(White Outline) Style)
     mastodon-mask: Mastodon (Mask)
     mastodon-light: Mastodon (Light)
+    missing: Mastodon-missing (Dark)
+    missing-contrast: Mastodon-missing (High contrast)
+    missing-light: Mastodon-missing (Light)
     mobile-small: Mobile Small / Mastodon (Dark)
   time:
     formats:

config/locales/ja.yml

@@ -1331,6 +1331,9 @@ ja:
     instance-ticker-type-2: Mastodon instance ticker Type-2 (ダーク / Favicon Images(White Outline))
     mask: Mastodon (マスク)
     mastodon-light: Mastodon (ライト)
+    missing: Mastodon-missing (ダーク)
+    missing-contrast: Mastodon-missing (ハイコントラスト)
+    missing-light: Mastodon-missing (ライト)
     mobile-small: Mobile 小 / Mastodon (ダーク)
   time:
     formats:

config/themes.yml

@@ -21,3 +21,6 @@ instance-ticker-type-2-light: styles/instance-ticker-type-2-light.scss
 instance-ticker-type-10-light: styles/instance-ticker-type-10-light.scss
 instance-ticker-type-11-light: styles/instance-ticker-type-11-light.scss
 instance-ticker-type-12-light: styles/instance-ticker-type-12-light.scss
+missing: styles/missing.scss
+missing-contrast: styles/missing-contrast.scss
+missing-light: styles/missing-light.scss