I feel like this is a troll thread… but as others have no doubt said, the runes aren’t just different colors, they’re different symbols, and if you can’t see the colors, you can match until you see the progress text spring on screen informing you that you just got some matches.
Even then, you could always just play until you win. I even played a little after winning. I find the game enjoyable enough. Really wish it were a Toy.