Nothing wrong with the c4d being the same kind of colour as your sig, a lot of times I use my c4d an smudge it to get the bg going for me Than later on place it to get the cool affect.

Gradiant map tho is a little too much in this sig, try if you wish to have it on hard erasing parts of it (even randomly) to bring back your original colour and play around with that ^^

lol just a few kind of tips I use anyways

<3