Fun, Some Small Bugs
I have never played Canabalt, so for me the colors is a fun twist to the side scrolling running games. It's a simple and fun game, perfect for killing time. Controls are responsive, which is really important for these kind of games.
There are just 2 things that I wanted to mention:
1. The shrub area of effect is actually larger than the shrubs themselves, which makes it a bit frustrating to try to gauge the actual area you need to avoid.
2. While I did mention that the controls were responsive, they were too sensitive at times. The llama sometimes performs double jumps if I tapped the jump key a fraction of a second too long.
Overall, great job. The artwork and animation is decent. The progressive gain of color is good.