ATC size keep bugging me

It doesn't bug you all,specialy when your about to take off or land, the big size of the letters of the ATC you can change its shape but not the size,if I could change the size of the letters and colours I would like to place it in a corner very little and red CAN IT BE POSSIBLE?I asked this few days ago and garymbuska gave me an idea that in fs9.cfg to search the font and size,i made all of it didn't work,Any one has an idea?