In the painting tools for Planet Coaster, where you can choose the terrain for the ground, you can only choose the type, but not the colour. I think it would be really useful if you were able to have two options when you choose the terrain for the ground: One, to be able to change the colour of it to any colour you want, like purple, blue, or any other unusual colour if you're making a Sci-Fi park, for instance, and want the ground to have an unusual colour to make your Sci-Fi park look like it's on another planet. And two, to just choose the default colour for the terrain if you don't want to change the colour at all.