Green and Gray

JI discovered the joy of mixing tempra paint today: green (yellow + blue) and gray (black + white). After painting for a total of 5 minutes he was bored.

Since we were already messy and it was warm outside, I pulled out the sidewalk chalk paint. (Love it, BTW.)
He seemed to be working so diligently. I *thought* I could sneak inside and clean the kitchen.

Not long after, unsure of the "pitter patter" sound, I peeked out to find...