Yes, that would be a great idea. I would like to see a pair blue jeans on in my pit. However, I don't have a clue about changing it. Nevertheless, I'll be waiting for someone who does.
You may want to take a few lesson before you take off in your newly owned helicopter. If you don't, this could be you--take a look for yourself: http://www.youtube.com/watch?v=232hX895nU0
After watching the Military Channel's documentary of the U.S. Navy's A-4 Skyhawk, I realized that it can be compared to the SU-25 family.The A-4 was an hell of a gound pounder and it was nimble as "Jack be quick."
Try using the Ctrl+ and Ctrl- keys to set the proper target designator size. Once the proper target designated size is entered, hit your lock on switch that you've programmed into your HOTAS and fire away.