With all the rain we have been having I think it's time for a rainbow. Rainbow cupcakes anyone? This is totally not my recipe. Nor have I tried it - YET. But I did bookmark it in Google Reader as something fun to do with the kids over summer vacation. And well from one momma to another, fun summer vacation stuff needs to be shared. And with that said go here for instructions and a detailed recipe Our Best Bites. Below is a quick copy and paste of their recipe - just in case the link doesn't work.
1 white cake mix
1 C sour cream
1/2 C water
1/3 C vegetable oil
Combine all ingredients until incorporated (about 30 seconds). Scrape sides of bowl and then beat on med-high speed for 3 minutes. Divide batter according to how many colors you are using. 5 colors worked out to a little over 1 cup for each color. Use food coloring to color batter to desired intensity. These use a 1/4 t and they were very bright! You could easily make pastel rainbows using a little less.
You'll want gel food colors for this, not the little bottles of liquid. Gel color adds a ton of color with a small amount of dye. You can find gel colors at craft stores like Michaels and Roberts, and in the cake decorating isle of Walmart.