I have little spots that float in my eyes too, ranging from a darker transparent color to white little lights. They are commonly called floaters, its when little pieces of debri blocks the light in the back off your eye. Its totally harmless, however if it is affecting your vision, or does not go away after a short time i would see a eye doctor to make sure nothing has came unattached in the back of the eye as this happened with my gf but it also caused her to have a lazy eye before she had surgery.