I'm going to be honest with everyone. If it's online, it's going to be taken and shared. It's just the way the Internet is.
If you want credit for work done, put a
HUGE watermark in the middle of your work. Yes, it looks awful with it there, but that is the only way you're going to get credit each time it's used. If you want to be contacted, you could even put your email as the watermark. I used to feel like you guys too, but I have come to realize there is no way to stop everyone from taking your coloured works. Yes it really stinks, but aside from tracking each person down and verbally beating them up (like was done to the original website owner this thread was posted about) there is really nothing that can be done.
