I chose a raspberry red for the inner border because Mary Ellen had a raspberry in her blocks (four of them that were identical)... Looks nice, I think.
This is my 'gray' experiment.... I had to go out and get a few grays since I don't think anyone has many of them. I didn't have many in my stash. I think they have a calming affect... The bright streak through it, will be duplicated on an inner border with gray squares (4" sq) as an outer border. I am not sure how the diagonals will move but I think it could prove to be interesting. (Margaret has previewed it and isn't crazy about it but I think it could work). We'll see as it progresses. I'll post better photos when the lighting is better.