Shopping list — 13 paints
Armour Plates
The armour plates get blocked in with black. Then a broad highlight with thinned down Warpstone Glow, finally an edge highlight with Moot Green.
Necron Body
All skeleton-parts get blocked in with Vallejo Metallic Black, then Leadbelcher and some highlights with Stormhost Silver.
Royal Decoration
For all parts that Necron Royals have like coats and similar stuff
Glowing zones
I used Vallejo Cold White and added Tesseract Glow and glazed down to darker colours.