If it was me, I would just try to match the color as close as you can since you are only 2 short. I really don't think it will be that noticeable. I have been known to add on to one piece before after I miss-cut a piece, but it was only one. I would hate to have to do that to all of them. But, others may have other suggestions for you. Good luck with whatever you decide to do.
Vicki