If I understand what you're asking for, you want to know if there's an option for leaving the button backlight on all the time. Unfortunately, there isn't an option on your TV for this. I'm sorry.
I have the Samsung 58" Plasma pn58a650t1fxza its awesome tv and the quality is beyond georgeous but if i dont have the remote and go to press volume or any button for that matter on the actual tv you can't see where your pressing once you press it they all light up but by that time you might of accidently changed channel instead, is there an option i'm not seeing that i can make it stay lit?? please help its very frustrating