I am working out the lore for my own necron dynasty but I don't know much about the lore in general yet because I am still pretty new.
Anyway, I was reading that destroyers are basically necrons who went fucking crazy while sleeping. Woke up and thought "I love being a machine" basically and started upgrading themselves. They are effectively outcasts among necrons for actually liking being a necron. I was going to play that into my dynasty somehow. Also, I like the iron warriors a lot. I like how they are just as bitter as necrons. They prefer machines and upgrading themselves to using chaos(I think). What are the chances that perturabo and a necron would actually get along?
Last question, color schemes, I was going to paint my necrons in the iron warrior color scheme basically but I am not sure if they will work how I think it will? It seems space marines have many more flat areas on the their armor than necrons do. Just wondering where I would even put the classic hazard stripes on a necron. Any insight or thoughts on lore would be nice. Particularly of something like a "Destroyer Cult" being possible? I guess ultimately its "my dudes" and it can be whatever but I like for things to still fit the setting. Right now the extent of my necron collection is 5 immortals and 5 lychguards I got from a friend that he never opened.