According to NPR, Captain Citrus has solar powers and he has cool, green hair. Not only that, but he starts off each day with a healthy drink of Florida orange juice.
I guess you can download his comic book adventures somewhere, but the NPR story doesn't tell you.
Little known story. I used to be a fan of the Legion of Super-Heroes. This was a few reboots ago. I eventually grew tired of learning new origins for my favorite future heroes. But they inspired me to create a superheroic identity for my old dog Moogie: Citrus Lad. He fought crime with the power of citrus. That's about as far as I ever got to defining his powers. But I'm sure he'd take a bite out of Captain Citrus if given half a chance!
Anyway, let me know if you know where to find his comic. I'm tempted to give it a peek!