How to fill these in?

Without getting too complicated hopefully (Sorry Michael if you read this, I'll get back to the other game involving colored squares that you were helping me with.. I am doing a few easier games first because getting into your code confused me a bit). Look at the screen shot I've attached. I drew that using Playfield.

What would I use to color those squares in? There are only two different colored squares.. one is red and the others are green. If I can figure out how to
color those in with different colors. Sprites would be great.. they're all the same, except one is red and the others green. The most squares that can be
colored in at one time is 11 or 12 (I forget since I am at work.. one red, rest green), but if that is too many squares to color in then I'll omit the
harder levels and drop down the number of blocks to be colored in.