You could make a red floor and cover up the bits you don't want red with floor items.
-np
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You could also go the opposite route. Change the SG colors to both red, put down a line of floor tiles, then change the colors back. Of course, you can never use that floor tile type again or it will reset all existing ones. (I have not tested that, but that's how the banners work.)
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Ty, the first Idea works perfect. everyone else's ideas are great too 
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High all, I have a throne room in my sg base, and have been trying to figure out how to make a "red carpet" that leads up to the throne. After Alot of time playing around, I couldnt figure it out, so I challenge you. Whoever has the best design, I'm gonna copy and place it in my base. I appreciate any help.
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