[refactor] Lift the theme contract out of the Tailwind config - #5740

126 tests  ±0   124 ✅ ±0   1m 25s ⏱️ -11s
  1 suites ±0     2 💤 ±0 
  1 files   ±0     0 ❌ ±0 

Results for commit d9a1dc1. ± Comparison against earlier commit b7a5916.