To earn the "Casual Completionist" trophy in Pic-a-Pix Color, you must complete all of the 10x10 grid puzzles (Puzzles 6-50).
You can skip the puzzling by following the solutions in the below Google Drive folder I'm putting together. This will eventually contain every puzzle solution. Fill everything out in less than a minute to unlock the trophy.
https://drive.google.com/open?id=1GouHjmn9DNF034KII1A96lGLKD...