Kids party - is beige food ok?

[Namechangedtoprotect]

28 kids and approx 15 adults. Was planning to hit Iceland and do a sea of beige so mini pizza, sausage rolls, cheese and onion rolls. Bread and cut up carrots, cucumber etc with houmous. Lots of crisps. Can you serve chicken nuggets cold? I'm doing it in a hall so needs to be precooked and served.
Also on a bit of a budget :-)

I don't know how to do a thumbs-up emoji so here is a verbal one

Perfect party food. No-one wants healthy food at a kids party buffet!