have you ever considered multi-colour STN-Displays? They look fantastic and make for great macro shots!
If I’m not fully mistaken this is a so called CCSTN display that doesn’t use a filter to colour the pixels, but rather an optical effect called birefringence. This display does not dim when a different voltages are applied across its pixels, but change colour! So cool and such weird tones :3
Depending on the camera and light angles used, the colours and contrast fully change