The shield that drives me crazy

It took me quite some time coming up with the shield's color scheme (sorry for the fugliness sketch)... I have rough plans for the torso and the arms too but when it comes to the legs... I really have no idea.

Looks like brain is becoming a desert now. Dry.

What color? What color?

It's been such a while, two months in exact.

After the last airbrushing (Devil Gundam), I'm facing with a traumatizing 'what to paint?" syndrome the moment I'm done assembling Gundam 0079: Operation V.

I'm having thoughts of modding Guntank into a super mobile fortress as in something similar to a Rhino - massive beam cannon. I'm getting an idea of fitting Guntank so it looks something like Xamel :/ BUT that's another story, wait till when I'm good at pla-plating skills ehehe

NOW, the first order of business, the grand-daddy of Gundam... What custom colors fit RX-78.
I don't think I'd do marbling effects and the only idea I have in mind was to convert it into an Rx-78-3 Solomon Express G-3 and considering metallic elements to be included, too.....

Hmmm....