As per the screenshot attached, the icons in the recipe book for all of the colorizer blocks are either completely invisible (in the case of stairs, slope, the colorizer itself), or seem corrupt and unclear, as in the case with the fireplace and similar blocks.

Once placed in the world, the blocks seem ok, and take textures correctly, but the recipes are difficult because of the invisible components.

Using version 10.0.0 with Fabric 1.20.1 - Have tested it both with and without my shaders applied and it's the same either way.