OMG! So cool! It takes a lotta skill to make a good rotational model that doesn't look choppy as it turns ^_^ What gif program are you using? Some don't support partial transparency so they convert all outlines to solid black borders. I use Animation Shop and it does the same thing. Easy fix is to not make it transparent but instead make the background deviantart greygreen so it looks transparent. Cheating for fun and profit!
I used an Impmon as reference from the game Digimon Master. I just used 4 images. I could have doubled it and made it completely 3-D but this is all I needed. I just used Beneton Movie Gif to make it into a gif. Its a very simple free program. Which would probably explain it. If you look at the image in stash from the description I used Adobe Flash CS3 Pro.
I can never match the color even if I screenshot and pull it from the page. Its weird to me. Also I use a color theme on this site and I know others do so it won't work as well XD