The eyes dragons live underground in caverns and aren't used to light. They rarely come up to the surface, so their wings are quite small. They have evolved to have multiple rows of eyes that can see well in dark places, and their claws are large and sharp to grip the ground. Eye and scale colors vary. Any color can be used. If it is for the eye it must be the pupil color only, and it must be a bright color. (the surrounding eye is black.) The spikes on the head can't be a bright color. The scales must be dark as well.
Art by me. Dragon world thing by @Rushybear