I would like to know if your requested B7 light bulb means color coating.

If yes, I would like to explain to you B7 light bulb as below.

Our car light bulb includes clear, B1, B2, B3, B4, B5, B6 and B7.

B7 light bulb is deepest color, which the color temperature will be 6800K-7000K.

Frankly speaking, B7 light bulb is difficult to be done.

In order to make you clearly B7 light bulb, I will show you picture as below.

Hope you can give our b7 light bulb a chance.

Because our B7 light bulb really best price and top quality.