You're after the paint number 71.032 (Golden Brown) to match Averland Sunset; assuming that's the colour you want to base coat your models. There's no Model Air equivalent to Yriel Yellow, so you'd need to look to other airbrush paint lines (e.g. Minitaire) or thin another paint.
Brewermike is techincally correct; however most people with whom I've spoken do not like to use
GW paints in their airbrush, I myself prefer Model Air as well, it's just easier to use