Personally dude i prefer the second one. The colour in the third looks out of place. I know that neither u nor i like the mono thing but i think in this case it needs to be slightly. Its kind of a dark and dindgy render and unless u go back to the beginning of the sig then i think you can't really add the colour. It kinda just looks wierd to me. But in the end it's ur work and your choice whether u think it looks good or not. Like the background btw dude, specially in the second cos it kinda looks liquidy and flows.
