No that wont work because it knows there is only 6 buttons to light up, so it lights buttons 1 to 6 even if you add an extra button 7 it won't light that up. I have my buttons set for NeoGeo on the bottom row, so I need to remap my keys for that. The problem is the plugin does not currently take into account different button mappings for games. BUT I am working on it. There will be an "Advanced Mode" where you assign keys to LED's instead of control names. Then I will read in all your custom buttons mappings for default.cfg and <rom>.cfg and then map the LED's accordingly. I want this feature also, because I want my NeoGeo buttons to light up right as well, so it will get done. A large chunk of test code necessary to do this is already written, so I just got to get some time to merge it into the plugin code.