Document theme-color

CHANGELOG.md

@@ -8,6 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Added
 - Added move account API
+- Added ability to set instance accent-color via theme-color
 
 ### Removed
 - SSH frontend, to be potentially re-enabled via a bridge rather than wired into the main system

docs/configuration/cheatsheet.md

@@ -1114,6 +1114,18 @@ config :pleroma, :frontends,
 
 This would serve the frontend from the the folder at `$instance_static/frontends/pleroma/stable`. You have to copy the frontend into this folder yourself. You can choose the name and ref any way you like, but they will be used by mix tasks to automate installation in the future, the name referring to the project and the ref referring to a commit.
 
+### Theme settings
+
+Settings to change theme as exposed to the outside world, for software
+that scans `index.html` (mainly misskey)
+
+```
+config :pleroma, Pleroma.Web.Metadata.Providers.Theme, theme_color: "#593196"
+```
+
+This sets the `theme-color` meta tag on `index.html`, and is basically
+a hack to make misskey find the right thing.
+
 ## Ephemeral activities (Pleroma.Workers.PurgeExpiredActivity)
 
 Settings to enable and configure expiration for ephemeral activities

lib/pleroma/web/metadata.ex

@@ -25,7 +25,8 @@ def build_static_tags(params) do
   def build_tags(params) do
     providers = [
       Pleroma.Web.Metadata.Providers.RelMe,
-      Pleroma.Web.Metadata.Providers.RestrictIndexing
+      Pleroma.Web.Metadata.Providers.RestrictIndexing,
+      Pleroma.Web.Metadata.Providers.Theme
       | activated_providers()
     ]