My linguistic expertise might be the lowest of all the contributors on this topic yet the two words ashamed and embarrassed are merely synonymous..!
I wish you were neither embarrassed nor ashamed for one of these is the mother of the other at times but most of times these are Siamese twins and i can assure you they are inseparable,
One of my former teachers once said "If God gave you a lemon for a gift, make lemonade out of it" I can see being black is a God given lemon-gift to you, make a juicy man!
In-case being black makes you embarrassed/ashamed just use it as an asset; I can assure you there are lots lemonade thirsty people out there for a black-lemon-made-drink. We have lots of things to offer not only the acidic taste and the wrinkled peel the western media portrays.