I also wanted to make some cute carrot designs but wanted to avoid Yellow No. 5, which as a kid after eating cheetos and grape soda made my throat close up and I broke out into hives, so I experimented with a few colorful things from my pantry and garden.
For orange, I used a combination or saffron, turmeric and cinnamon. And for the green stems, I used mint leaves. I ground everything up in a mortar. The colors were a lot more natural in a nice way. They also had subtle spice hints, which were a fun surprise.