Red Armour

1. Prime black
2. Base coat using stippling/drybrush Dark Crimson don't worry that it's shiny
3. Stipple/drybrush Red Oxide
4. Stipple Bold Pyrrole Red as highlights, then do a second round of this

Black

1. Basecoat black armour, treads, and weapons Black
2. Black armour only: stipple Charcoal
3. Highlight black armour with German Grey

Metallics

1. Drybrush treads with Jet Exhaust this is a thin paint but you can do this, just takes more drying of the brush
2. Paint weapons/exhaust Jet Exhaust
3. Highlight weapons with Silver
4. Paint some metal bits with Bronze
5. Highlight above with Light Bronze

Window slits

1. Basecoat Dark Grey Blue
2. Paint 1 or 2 corners Sky Blue

Lenses

1. Basecoat Green
2. Paint dot with Bright Green