Changing Colours of Trees? (pics)

I'm using the base tileset Underground, and imported some tilessets from Sunken Ruins. The question I have is why do all the trees I place that wold normally be bright, be so dark and bluish in the Underground tileset? Is there anyway to fix this?

Yes, it's pretty easy. The game tints everything in certain tilesets to a color to match the tiles. For the underground, it tints everything bluish.

I'm at work right now so I don't have WE, but it's something like Map Preferences > Custom Light Environment. Look around in the menus for that. Then set it for something bright and sunny. Or, whatever.

Sorry I couldn't be more specific.

Perfect, thanks.