You did read this paragraph, right?: "My Idea: I am thinking of using a Sharpie to make an X across the entire coaster, corner to corner, but drawn as if BEHIND the squares (it won't intersect any arrows). Thus, only the white portions of the coasters would show the X, but (I think) it will be glaringly obvious to spot this X and associate it with Xeno and, thus, ***focus on the arrow colors instead of the square colors***." (asterisks added for emphasis) I am definitely aware of the arrow colors; so, yes, I am asking the following: > From: Christopher Hickman <tophu@xxxxxxx> > If you mean that you need some way to mark a second set of coasters to say "Hey, these ones are Xeno coasters, ignore the square colors!" then Just get a fat sharpie and black in the border around the whole coaster. Interesting idea, because it doesn't "lock" one into designating them Xeno, per se (the black border could ACTUALLY be to designate them as Rainbow, which has Black opaques). I am not sure, however, if I like the idea, as it could make it particularly hard to see the arrows that point off of the coaster (viz purple arrows on the yellow (?) coaster). But you give me a second idea: black out the squares themselves, making only the arrows visible (black out the Rainbow color on the center squares, leaving only the Xeno). Seems a bit... dark and harsh... but it is really unequivocal. OK, great, thanks! Two idea from one post! Any others? David