The reason for this is that Sonic is one of the most famous video characters there is, his animal, yet slight human-like style makes it more interesting for fan-characters to be based on him, also Sonic's abilities usually encourage the creator of the fan-character to have their own story line and abilities.
Veronica the bat, Legend the cat, and Melisa the angel seedrian.
No. Digimon species don't change color. However there are many recolors that are considered separate species like Agumon and BlackAgumon.
I would suggest checking out www.modthesims.info. They have a great selection of tutorials that can teach you about how to mod your game. Everything from skinning, to recolors to meshing.
check out boblishman profile at modthesims2. he made binkys for toddlers and there are several recolors as well.
If you mean colorful as in a hot pink tv kind of thing, the only thing I can recommend is to try downloading tv recolors from a website such as modthesims2. Otherwise I have no idea what you're talking about.
Taito, Akaito, and the other Kaitos are all fanmade vocaloid. They were created by the different pitches that Kaito can sing in.
Fancharacters are extremely common in the Sonic fanverse, but it is quite unlikely that SEGA will take a fancharacter and put it in their games, but who knows? Maybe they're secretly being inspired by some good ones, and/or that they'll make a competition or something in the future...
They are bad, because even if you recolor for fun, doesn't justify you dispecting someone else's art. The orignal creator of the pic wouldn't enjoy you taking their art and painting over it. The pic was ment to be enjoyed AS IT WAS!
"Mainly" is correctly spelled "mainly."
Mainly means to the greatest extend. The audience consisted mainly of students. The girl's mainly put make up on.
"Is mainly due" is the correct phrasing. The verb "due" should follow the adverb "mainly" in this context.
Railroads mainly carry trains. Railroads mainly carry trains.