A new level color needed!

[septemberish]

Hello!

I assume this is an incredibly old project and you might never look at this issue, but I still want to raise it. I've managed more than once to merge two pink squares, and the game just doesn't support it. The score says NAN and there's no color for that value anymore. If you're still active here, why don't you add one more color for that number? It would be awesome.
Anyways, thanks for the release!