Actually, I think it changed last week.
Every game is "close" to identical, and some patterns are the same each game, but each game is slightly different from another.
For example, Level 1 stage 1 sometimes starts with blue, sometimes it's orange. And level 3, stage 1 always ends with red coming out from the right, followed by green spiral. But the fireworks prior to that can get mixed a little.
I don't know if that helps or not, considering I've managed to confuse myself.