some items don't display their respective colour on the map.
I've made a list of blocks I have encountered to not work, feel free to add to this:

sandstone blocks and slabs= appears grey?
white terracotta= is white despite having a more skin-like colour
diorite= appears grey?
all beds= all appear red

I was really exited to make some map art but after this all motivation was lost. Please fix this by having full parity with java edition.