This is an old revision of the document!
The Colored Subway Wagons is a mod that provides red, green and blue-colored versions of the Subway Wagon. It does this by registering 3 wagons with mostly the same definition but different textures.
Hardware colouring as used by the E231 would probably be a better approach. Currently this mod lags behind the official subway wagon and does not support the 2-digit line numbers feature.
The crafting recipes for these wagons are the same as the original yellow subway wagon but with a different colour dye in the middle.