Here is the full list of all 9 Touch the Color achievements.
Play 10 games.
First game!
Change theme for the first time.
You get your gift for the first time.
You bought a theme with stars.
Collect 1000 Stars from the beginning of the game.
Play 100 games.
Collect 100 Stars from the beginning of the game.
Collect 500 Stars from the beginning of the game.