Try my favorite Smashbox Nude Lip Liner or Too Faced "Perfect Lips"
and a matching lipstick or gloss like:
Fresh Sugar Lip Treatment
Urban Decay Lip Junkie Lipgloss in Naked
Bobbi Brown Lip Color in "Beige"
MUFE Rouge Artist Natural in "Pink Beige"
Smashbox Be Legendary Lipstick in "Honey"
Lancome Color Design Lipstick in "Pale Lip" (a soft nudey pink tone)
or "Natural Beauty" more of a nude beige sheen