8x8 LED Matrix Question: Can you change the brightness for different LED'S?

8x8 LED Matrix Question: Can you change the brightness for different LED'S?

Hello, I have been recently been tinkering with my 8x8 LED Matrix. I have progressed alot, but I have a question that I need answering. Are you able to change the brightness for individual LED's?
I thought it was possible, but I only knew how to change the whole matrix's brightness. If anyone could help, I would be very thankful. This question has been bugging me for awhile. Thanks.

~Arduino_Lover813

We don't know anything about your matrix, so the answer to

Are you able to change the brightness for individual LED's?

must be a solid "no".