There are problems on: `A1R5G5B5`, `R5G6B5`, `R5G5B5A1`, `D1R5G5B5` textures. `A4R4G4B4` has also issues.
Check this: https://github.com/DHrpcs3/rpcs3/commit/d745a7bb4ebd974523506655de5b2071cbf47932#commitcomment-6359180
After seeing what RPCS3 renders, I understand those color issues, but I have no idea about how to fix them.