I'd go with something natural...you don't want to look too fussy or high maintenance...people in labs tend to look at you funny.
Personally my favorite uber natural face is a light coverage foundation, pinky blush, with either Omega or All That Glitters (depends on if you want the shimmer or not) on the lid, Espresso lightly in the crease, and Vanilla e/s as a highlight for the brow and inner corners. I usually tightline the top lid with Blitz and Glitz f/l, and use an angled brush to line the bottom with Espresso. Swipe on a little mascara, and a nice lipgloss, and call it done. Lip-wise, I usually go with something like Extra Amps, or Rags to Riches d/g, or Love Nectar l/g if I want a more neutral lip. I love this because it's quick (takes me maybe 10 minutes), and looks really pretty without being too much. HTH!