Darker-skinned people often gain moles as part of the aging process, the way lighter-skinned women will get age spots. The older they are, the more moles they have--more appear each year than the previous year--and the moles also grow larger with age. These are different from the "character" moles a woman might have had all her life. I photograph a lot of older darker-skinned women, and not only not mind me removing a lot of those age moles, they often ask for it. My approach to removing age moles is the same as my approach to removing age spots and wrinkles.
I always--always--lighten the moles I don't remove. Nobody's mole is as obvious to them in a mirror as a photograph makes it appear.