There aren't any matte/dull patches, just problematic photography -- it's shiny/reflective all over. In the final pic, you can see the rectangle of my black phone/camera reflection ... the colors inside that area (at least until my finger shows up lower down) look richer because the phone is 'shadowing' it from a of lot scattered light reflecting off the white ceiling. Once it fully cures and I can stand it up vertically I may be able to get a more representative picture.
Acrylic paints, various pigment/mica powders, metallic flakes, alcohol inks, and even nail polish can be used as "dyes" for resin ... as long as you keep the pigment ratio down to 10% or less (or you'll begin to have problems with the resin curing properly).
To make mould for direct pour resin in shape of doors take a piece of plasticine or something similar and then press the existing doors into it until perfectly flush. Then trim excess and bobs your uncle 
