The girl that I buy my foundation from is looking to expand her color range, so she's looking for people who are willing to email her a picture so she can try to color match them, then send them a free sample so they can let her know if it matches, make sure it doesn't look ashy, etc. You don't have to be super dark, medium skin tones are also needed!
I bought a sample pack once and each baggie had enough for several applications.
If you know anyone who would want to help me and test out colors, I'd be happy to send them out some samples when I get around to making the colors. Just ask them to send me a photo with no makeup to firstname.lastname@example.org
. This really helps give me a feel of skin undertones and colorings, as I try to get as close to life as possible when I make my foundation colors. Its a big goal of mine this summer, to expand my range of available colors.