bob jenkins wrotearm sleeves = leg sleeves = tights = tshirts.
T-shirts? T-shirts (undershirts) have to be the same color as the jersey. There's no other choice. Period.
Sleeves don't have to be the same color as the jersey, they can be the same color as the jersey (and the undershirt), but they can also be white, beige, or black (colors possibly different than color of the jersey (and the undershirt).
Of course, in the case of a white home jersey, or a black road jersey, bob's statement may be true in many situations, and in those situations, always listen to bob.