Superhero Party! Iron man colours?

Hi all,
I have a superhero party coming up. Ive only ever done spiderman and batman faces, as its all that gets asked for usually, (also TMNT but I dont think thats particularly superhero) but this party is a full superhero theme and all boys and more superhero faces will be needed!

So firstly, what colour and brand paint do you all use to do your iron man? He isnt red like spidey, more of a deep colour that im trying to figure out. Who sells the right shade? Or do you mix colours to get iron man?

Also what are your recommended superheroes to have on the list?
I was thinking

Batman
Spiderman
Iron Man
Captain America
Hulk
superman
the flash
the green lantern

am i missing someone important?

any pics for inspiration?

Its for a group of 4yr olds.

Wonder Woman is there are any girls...
Green Arrow is a good one too

i use global red and cameleon oscar gold for iron man - looks awesome! (tag teal for the eyes)

Wolverine! - might be worth adding to your list

Definitely Wolverine as Kookyclowns posted.

Maybe Thor also?

TMNT are totally Superheroes!!! But where is Wolverine!?!

Definitely need a Wonder Woman and a Cat Woman in that list. A Transformer and a Power Ranger might be a good thing to know as well... superheroes or not...