Done painting with the OP's internal frame. I still need to hand paint some small details and also dry brushing on some parts later. I used a variety of metallic and clear colours from Gunze and Gaianotes.
It looks like a waste of time since most of the internal frame will be covered once the armors are attached, Well, I just like to paint everything on a kit. Haven't really though of a colour scheme as yet. I need to do some brainstorming... urghhh..