Homemade watercolor paints

Yesterday it rained a whooole lot.

Luckily, my homemade watercolor paints finally set (after two days of waiting), so Chuck and I spent the morning painting.

Overall, the directions I used were pretty good, but I made two changes:
1.  I only used half of the materials recommended... and I still had plenty of water color paints.
2.  I added drops of food coloring to each of the ice cube trays.  (Looking back, maybe I should have compensated for the extra liquid by adding a bit more cornstarch to shorten my drying time.)





As you can see, Chuck enjoyed painting.  He also enjoyed repeatedly dipping the Q-tips into the water... and sneakily trying to drink the dirty water.  (Ick.)  I probably had more fun painting than he did because I was so delighted that the paints actually worked.

Here are our two joint paintings:

The paints weren't chalky when they dried.  We'll probably cut up the cards to make a birthday card for a niece.  Right now the leftover paints are sitting in the fridge.  We'll keep using them throughout the week because I'm curious how long they'll last.    

UPDATE:  5/24- I pulled the paints out of the fridge yesterday and they were rock hard.  I was worried, but after I didn't need to be.  After adding a couple drops of water into each well, they became paints again.  The colors didn't seem as vibrant as before, so Chuck and I ditched the q-tips and just used our fingers to paint. We got some lovely results.  Now they're back in the fridge again, and I'll pull them out in another couple of weeks to see if they last.

Have you ever tried to make homemade watercolors before?