Okay, I managed to get a name on the brush, it's called:
"Greenspoon waterelemental".
Just use Deviant's search engine if you still need it.
I have visited your recommended site and really enjoyed viewing the pix. I found one pix in black and white. How is this converted to a different color?
I've seen a couple of tutorials on how to color a black and white picture into real colour. I've never really tried it myself, try searching:
http://www.good-tutorials.com
Or maybe someone else here knows how to do it, I personally have no idea.
(Do you want to colour it in realistic colors or just one or two different colors?)
I'm not sure what you mean by that last question. It's hard to say anything with out seeing any pictures, or without you explaining a bit more ..