Leaf litter map color is incorrect

The bug

The map color for leaf litter is incorrect, matching the green map color of leaves. One might expect its map color to match that of dirt or another brown block.

A screenshot is attached.

How to reproduce

1. Obtain and fill a map

2. Place an area of leaves

3. Place an area of leaf litter
   ❌ The map colors match, although the blocks are very different visually