Minecraft map art colors and blocks

A filled map paints every block as one of a fixed set of map colors. The 60 Arachne builds with are listed below, each with its three buildable shades and every block that renders it, from Minecraft 1.13 to 26.2. The block list, colors and flags are read from the game's own files. The color names are Arachne's, since the game only numbers them.

On a staircased map a block's shade depends on its height against the block directly north of it. Higher reads light, level reads normal, and lower reads dark. A flat map only ever shows the normal shade. That is why the first row of a map art build needs a reference row along its north edge, or the top row renders a shade too bright. A fourth, darker shade exists in the game's color table, but no arrangement of blocks produces it. The game uses it only on explorer map previews, so for a build it appears only in map data written directly.

Every block listed under a color renders the exact same pixel. The choice between them is about what you mine and haul, which is what Arachne prices for your tools. Fluids, blocks that need a special ground to exist, and blocks that make no sense as map art are left out on purpose.