how do I set a certain color to a force? And how do i set a starforge color to a certain force?
You cannot make a force a certain color but you can edit each player's color in that force 1 color. Use starforge and dont do random start location.
You can use either StarForge or SCMDraft, after you've done all you need to in X-tra Editor and then save it with the new colours, each force player having the same if thats what you want. Then just open it in Starcraft, do not view in X-Tra Editor or be forced to put the colours back in with the other editors again afterwards!
If you don't know this already....if you change player colors in starforge and open it back up in SCXE the player colors will turn back to their original colors