yay
cool game, just some things that came in my mind you should add to make it really great.
1. a level editor, this game is perfect suited to have one as it is simply said just line rider with colors :P
2. highscores for each track. i think many people would compete a lot to get the very best times by finding the best ways to collect as many items, do as many tricks as they can and find the shortest ways to the end.
3. more songs. maybe like 10-15 songs from the music portal so the player can choose which one he likes the most or make a playlist.
4.some more race tracks and maybe a little story line or something to keep the thing interesting.
still a great game 4/5, 9/10 ;D