We'd need to see the image to be sure. Also... keep in mind some people's eye colors and saturation does actually change throughout the day.
I have a friend who I mistakenly thought was wearing colored contacts because he has pale-blue eyes normally... but sometimes I'd notice they were an intense blue -- so intense I didn't think it could be real. He did wear contacts and one day when I asked him about it, he popped out a contact lens to show me that they are, in fact, clear contacts and his eyes just do that (and he tells me that they seem to change based on how tired he is... he says they are the strongest blue when he's really tired and hasn't slept in a while.)