My recipe for various components of my Harlequins
  - Prime black
 - Overcoat   Black  
 - How about a zenithal with   Night Blue  ?
 - Blues are added with   Night Blue  to   Imperial Blue  to   Ultramarine Blue  
 - Pinks are added with 
 - Gold is   Retributor Armour  thinned with   Polished Gold  washed with enamel black where required 
 - Silver is   Silver  washed with enamel black where required
 - Red gems are a series of blends using   Black ,   Red  and   Averland Sunset  
 - Whites are   Corax White  and   White Scar , shadow with   Administratum Grey