Idea for one player goal

No new screen shots or even any code today. Too tired to to much but sleep tonight, but I did have an idea for one player goal.  For each gem type a certain number must be gotten to their goal.  This number will be shown below on red background, when that number is reached the background will turn green, Levels will be timed maybe around 2 minutes each.  I should make either the red or green backgrounds patterned so red green color blind can see the difference, nt sure what to do about red and green colours elsewhere is the game.