Base collours are:
Blue - 50/50 Necron abyss/Regal blue
Red - Mechrite Red
Skin was painted with this guide in hands::
http://www.games-workshop.com/gws/content/article.jsp?catId=&categoryId=800032a§ion=whiteDwarf&aId=3700001a
There is another good guide:
http://www.games-workshop.com/gws/content/article.jsp?catId=cat1350002&categoryId=400028§ion=&pIndex=4&aId=9600034&start=5