However you do it, I'd use some red and some blue! I have a tall son (6'6") so no matter how long it gets with multiple borders, I can tell you that it could still be longer and he wound't mind! (I did a 9' long one once and he loved it....just a simple one that had a great fabric, bought 6 yards, cut it in half and seamed it down the middle, and did the same for the back. Had to piece the batting to get it long enought BUT it was a well loved quilt!!!! He likes to pull some up around his face when he sleeps so he needs really long quilts..)