Thanks for trying out the demo!
Sorry the rules were confusing, Craps is simple at its core, but difficult to explain at the same time. Basically, all you need to do is roll the right number at the right time. That is what the blue/red numbers are trying to indicate.
I can definitely describe what yellow means better (It means you will win one bet, but lose another if that bet rolls). Same with the tutorial text complete on click. Same with game speed, I'm never sure what is too fast or if I'm just used to it.
Thank again for playing!