Some sites are now using a "color" matcher type thing. I tried it and I can truthfully say that it does NOT always work very well. If I have a specific thing I am trying to match I will take it to my LQS. Otherwise, I've been really happy with all my on line purchases. I have tried to get some marbles that I needed to match something...3 tries later...I had the right color. The other 2 went into my stash...so thats fine with me.