Of the somewhat iridescent color of light gray mother-of-pearl. See oyster-white.
The Century Dictionary (Public Domain)
Use "oyster-colored" in a sentence
"If you love camel or taupe very now, then by all means, but since they, like oyster-colored silk blouses, are a dry cleaner's meal ticket, I don't recommend them."
"Otherwise, try Giorgio Armani's oyster-colored silk shirt £299."
"A man at the shore, away from the bird-cloud, is gently plunking a toddler into the foamy oyster-colored water and lifting her back out."