Honestly, asking people to click through over a half-dozen links to choose how you
want to build your model
might be pushing it a little bit. I might suggest that--instead--you create a composite image that contains much smaller versions of all the schemes you have listed and either put the image within your post (assuming, of course, that it's within the Picture Posting Guideline
limit) or put a link directly to that composite image. That should be more than enough for people to get an idea of how well a scheme works. Or how badly it doesn't work.
There's a lot of folks on the boards that aren't too fond of picking other peoples' color schemes, so be wary. It's one thing to research camo patterns, and come up with something unique and different and apply it to a mecha model. Unfortunately, it's quite another to throw out a bunch of color schemes because you're not sure where to start and where to end. That's just a cautionary note. Nothing more.
And, on a personal note, I do like the way you tested your color schemes. Normally we see colorized lineart. This really gives you a much better idea on how your build could eventually turn out.
Finally, my vote goes for the Black/Red combo. It's different from the shades of blue and purple that are currently circulating around, and shouldn't be overly difficult to buy paint for.