Minecraft Texture Pack / VX Tileset Layout

In order to tell walls apart from floors & roofs, I've had to copy & rotate blocks from the texture pack. Leaving the blocks facing up will represent walls, rotating them 90* anti-clockwise will represent roofs & rotating them 90* clockwise will represent floors.
Example:

Wall Tile	Green & Cyan
Roof Tile	Pink & Blue
Floor Tile	Red & Orange