Well. A long time between paintjobs... I tried something different this time around to get a mini over the finish line more quickly - this time airbrushing inks (red from below, green from above), picking out the silver/brown/gold/skin/brain and then an oil wash over the relevant bits, letting that sit and sponging it off again. Took maybe 1/3 as long as my usual paintjob and other than missing a few rivets and making the pouch on his left leg armour I'm happy with it. Nice to get a mini done while struggling to find the time to dedicate to more involved painting.
I had no idea he had an exposed brain based on the catalogue pic... always a nice surprise to find unexpected details.