Just an opinion but... Triple Irish Chain is a complex yet simple pattern that screams for simple color choices. It's regal when done with one or two similar colors for the chains on a cream or white background. It gets very busy looking when you add more colors in.
So depends on what you want the end result to look like. I like mine in a white with dark blue for the outer chains and a silver blue for the inner one. Nicest quilt I have ever made.
tim in san jose