Since I can´t find those funky named colors mentioned in the sticky post above, I use simple acryls from the local hobbystore. They dry pretty fast, make a nice smooth surface and are cheap.
I use these colors, from RAYHER DecoArt.
The silver is just called "Bright Silver"
Other colors I used so far :
"Corn-yellow" for the shoulders
"Sun-yellow" for the shoulder-inner-scratches
"Artichoke" for the chest armor
"Burgundy" for the gauntlets, helmet-mandibles
"Black" for the inner cheeks, blaster
"Russia Green" for the helmet back
"Bambi Brown" for the blaster rust
"Cinnamon" for the RF ear
Custom mixed green for the helmet dome and cheeks