Allow different color schemes depending on the floor

[TheChilliPL]

It would be a great feature if we could set different color schemes for each floor/chapter in the game so that it fits the floor coloring schemes better or so the map is more visible.

It seems it would require a lot of additional configuration, so I'm not sure if expecting this feature is realistic, but I'm giving it a go. If you think it doesn't fit this project, feel free to close the issue.