Wow, you could make your own manga comic staring your own minis with that (though each character would have pretty limited poses I guess!)
The mecha looks great. Except for the odd obvious mould-line (don't let Commander Vyper see, he'll not be happy). I like the bronze on this one but think the blue detailing (unit markings, I guess) on the other one added a better contrast. Unless of course your unit paint-scheme is basically bronze, but one mecha has blue markings, one yellow, one red etc. Personally, I'd probably adopt some scheme like 'heavy weapons mechas' with blue trim (and use perpendicular bars like this
I-
I
I
for '1'
I-
I-
I
for '2', etc)
then have red or maybe dark green for 'close combat mechas' if you intend on having such. Something that provides more contrast than yellow, anyway. Maybe even white? The white on the one here looks like it might be a good enough contrast.
Having said all that, it is only a very minor quibble. You've managed to make some pieces of cheap crap look blinkin' awesome!