She's a fan of bright, fun colors right now, so here's what I did:
To do this, I cut the 2 baked layers in half like a bagel, using a long bread knife.
I dyed about 1 cup of the white frosting aqua (using mostly blue coloring with a hint of green coloring), and 1 cup I dyed bright pink (with red coloring.)
I used 2/3 of the blue between the bottom layers, then 2/3 of the pink between the next layers.
I then mixed the remaining blue and pink together in one bowl, which made the purple color!
Finally, I did the rest of the frosting with mostly green and a hint of yellow to get bright lime, or at least the best I could get it. I used a spoon to create the swirl pattern after I had frosted the cake, which is a hint I found on Pinterest.
Happy 13 to our amazing Nicole!