This is how I’ve painted my Necrons.

Infantry steb-by-step:

• Grey Primer
• Medium Camo Brown (Vallejo Model Air) sprayed from the bottom of the mini
• Arena Sand (VMA) sprayed from the 45 degrees angle
• Arena Sand + White (75/25) sprayed from the top
• metal areas: Gunmetal Grey + Black (Vallejo Model Color, 50/50)
• Gloss Varnish
• Dark Brown oil wash all over the model
• weapons were painted black and then some highlight were added using Adeptus Battlegrey (Citadel)
• green parts were painted using Green Zinc Chromate (VMA)
• edge lining with pure White
• battle damage using a 50/50 mix of Scorched Brown (Citadel) and Black

Vehicles step-by-step:

• Black Primer
• Black sprayed from the bottom
• Dark Seagreen (VMA) sprayed from the 45 degrees angle
• Medium Sea Grey (VMA) sprayed from the top
• green part and lights were painted using Green Zinc Chromate (VMA) and highlighted by adding some yellow and Radome Tan (VMA) to the mix
• After some thoughts I still need to add some edge highlighting on them and add some battle damage here and there.