We aren't doing anything fancy for Mercedes' color of the week lessons. Just incorporating whatever color we're working on with our normal activities and play time. She already knew her colors pretty well before we started so this has mostly been for fun and for review.
For red week, we used red paper to practice shapes.
The girls took a red bath.
We painted with red paint.
Mercedes used her red shapes to make a collage.
And we found all the red food in the girls' play kitchen stuff.