Tabs are made with an aged color for a close match of existing tabs. All radios age at different rates, thus the color of your existing tabs may not match these, but they should be close.
The tone tabs have a tone name inscribed in black on the face. (The set of 8 tone tabs includes ON and OFF tabs.) The blank tabs have a shallow pocket on the face to accept a station I.D. label. You'll have to make your own labels for your local stations. (see below)