Has anyone used SuperPig?

I was just curious if anyone has ever tried using Repashy's SuperPig to enhance their cresties' color? If so, is the difference really that noticeable? I know there is 3% already in the MRP but they say you can suppliment up to 6%.
If you've used it with any other species I'd be interested to hear how it worked as well.

I haven't tried it. I don't really feel like it's necessary since it's not like they NEED it but it would be interesting to try.