Necron Overlord

Here is the first of my Necrons built. The main colours are regal blue, gold, purple and burnished gold (boltgun metal, washed with dark brown and sepia). This type of colour scheme is similar to a unit of Kings of Chaos Thousand Sons that I am painting/ building as well.
For other models, I may have the metallic colours being gunmetal for regular warriors & immortals, bronze for lychguard/ praetorians and gold/ dull gold for lords and crypteks (who could be bronze instead).