@piffy please can you try updating to the latest tests-passed, just in case that color-input fix helps at all.
Assuming things are still broken after a rebuild, please can you try this:
./launcher enter app
rails c
Discourse.clear_all_theme_cache!
Same goes for you @don, if you have the time.
If that solves the problem, then it suggests we have an issue with the theme cache invalidation 