Ah well thats a bit trickier as I wouldnt use get pixel for it and would use memory.
Ill see about looking at how the loot function works and see if i can force it to pick up an item i wish via memory edits. If so i might be able to make one that does the selective looting you want

as i my self would like one that only picks up silver and elite lol
Cant do anything till exams are over though :P