There are four types of grid colors in RollerCoaster Tycoon 1 Loopy Landscapes and RollerCoaster Tycoon 2 for scenarios: red, yellow, green, and purple. The Lines are not along tile edges, but like a cross inside a square. These land types have no effect on excitement, but make a good futuristic look or alien-like theme throughout your park. Example: Icarus Park
The Blueprint Grid is the land texture in the Roller Coaster Designer mode of RollerCoaster Tycoon 2. The surface is black with blue gridlines separating each tile. It only appears in RollerCoaster Designer and cannot be accessed in any scenario.