crubleigh

Short of adding the biome coloring feature from bedrock, I’m not sure the best way to address the grass color. I would caution away from adopting the biome color feature from bedrock because of the difficulties it would introduce in choosing a location for the construction of artwork using maps.

I agree though that the leaf colors should change, much like how cherry trees and pale oak leaves are reflected accurately on the map. I would put forth the colors 50 TERRACOTTA_RED, 37 TERRACOTTA_ORANGE, and 40 TERRACOTTA_YELLOW as a good match for red, orange and yellow poplar leaves respectively.

While we are at it, the red shrub ought to be red and the shelf mushroom should be brown, as both are currently rendered as color 7 PLANT.

This is a bummer actually. With eyeblossoms as green we finally had a water and piston destroyable green terracotta color for maparts. Now it's just iron color, which is already covered by weighted pressure plates. It's especially annoying since the green eye blossoms made it into full release 1.21.4 and there were multiple mapart machines and external tools that were making use of eyeblossoms for their unique green color and physical properties. This is just like when someone reported it as a bug that redstone lamps are transparent on a map. The redstone lamp had been that way for many years, and was utterly unique in its properties for a map-transparent block, literally irreplaceable for many aspects of map display-tech. I think it would be great if we stopped removing unique block properties, especially once they've already made it into a release version.