They look like normal greys to me, though the male looks a bit lighter so he could be some sort of grey variation. Very pretty though! The greys can carry a whole host of unusual color genes so you might end up with some neat babies. I've gotten pied, albino, tangerine, and whites out of my greys. The coolest babies have been out of grey X White.
Is this their first time nesting? Don't be surprised if they hatch babies but don't do a good job with these first babies. Most of my doves end up killing a baby or two before they get the hang of it. It's sad, but I just haven't figured out how to help them get the idea. I try to pair my younger doves with older doves so at least the older dove knows what to do! Once they figure out how to feed, you'll have doves everywhere! I started out with a single pair and they've had about 30 babies over the past three years or so.
Have fun with them! I love my doves.