Memo Mosaic

Brain storming & kill time! Make all the memos into the target color as in top. Very nice mini puzzle game on mobile. Make all the memos into the target color as in top. 

Help: 
Click one memo, the memos in the same column or row will change each one's colors in sequence, and try to make all the memos in the matrix into same color as the one in top.

3 levels:
Easy: 3*3, 3 colors
Normal: 3*3, 4 colors
Difficult: 4*4, 4 colors