Just to point out an oversight about the starry grass and trees. They don't work properly when painted. The grass has the entire tile painted instead of only the grass, like with normal grass, and the trees are seemingly unaffected by being painted. It's a small oversight but it does limit options when building. and does cause a small bug on slopes and half blocks where the colored overlay extends beyond the block.
as an example, if you wanted black grass with the stars in the grass, it paints the full block instead of just the grass like with normal grass blocks. (I'm pretty sure its an extra overlay texture to fix this? I'm not sure.)