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