Thanks a lot! I'm going to play with this for a while, there are many options to tweak until I find the right tone for this. Cheers!
So after a while I gave up as I couldn't find a good balance, but because the screenshot is actually so simple I just edited with Gimp and it's so much better this way, love it 
The tool is great so I'll try it with other wallpapers now that I have it, thanks again!