Seemingly random

I'm adding a border of half-square triangle squares to a nearly finished quilt top (pictures soon!) and I wanted the colors to look balanced but not too balanced if that makes sense. I discovered it's hard to make something look random that really isn't. I thought about throwing all the squares into a bag and laying them out as I pulled them out but a) I was worried all one color would end up in a corner and b) I'm way too much of a perfectionist so I laid them out randomly but not too randomly. . .