(…merging here)
I think dark orange would suit well 9 years old F-Droid : strength + endurance (?), versus blue ( cool + fresh ?).
@webDev , there are few I don’t find in your artwork :
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android is now heavily focusing on multi screens : auto / tv … (and so should F-Droid ?)
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vocal command emergence (no hands required)
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reproducible-builds
(Back to orange,) F-Droid is not explicitly Gitlab dependent, but it seems there is no other “viable” solution to maintain the whole project. So orange could link to Gitlab without need of mentioning it (?). Also there should be somewhere a permanent “bridge” to encourage users to become Gitlab active members (especially for missing metadata ?) ?