Here's a pic of the arms in progress. I used a similar improvised ball and socket joint for the shoulder.

[ATTACH=full]89086[/ATTACH]

After a lot of fretting over a color scheme, I just went with a simple grey green with some yellow markings. The green is a mix of hellblau and hellgrün acrylics from Mission Model Paint.

 

[ATTACH=full]89087[/ATTACH]

 

For this model, I tried painting the chips with a brush for the first time (rather than my usual go-to hairspray method). I'm a bit crap at it, so it looks cartoonish to my eyes, but I think the later weathering steps toned it down a bit.

[ATTACH=full]89088[/ATTACH]

 

[ATTACH=full]89089[/ATTACH]

 

These calipers made a very convenient handle for this during painting.

[ATTACH=full]89090[/ATTACH]