1 C sour cream
1/2 C milk
1/3 C vegetable oil
Prepare cake batter as directed. 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.
I used 5 colors and it worked out to a little over 1 cup for each color.
Use food coloring to color batter to desired intensity. I used approximately 1/4 t and they were very bright!
To get a layered stripe, you'll want to put a spoonful of each color in the cupcake one at a time. The batter is thick, so it won't spread on it's own.
A great tip is to set out a little bowl of water where you're working. Dip your finger in the water and then gently spread the batter out. The water will make it so the batter doesn't stick to your fingers.
For my 5 colors, it worked out perfectly with 2 t of each color in each cupcake. So I put in 2 t of red in the bottom of each cupcake and spread it out with my finger. Then I put in 2 t of orange on top of that, then yellow, etc.
Bake them according to the package directions, until a toothpick comes out dry.
Check these out! True crazy BRIGHT colors.