MouseEntered()
src.iconstate ="2"
This takes about 1 second to actually change states.
I too, checked to see if was beating a dead cat. I am not. I also checked to see if anybody else has asked and only found two posts. Here and here. Neither got answered.
Maybe once they get out the next update or two and move back to working on software features they'll consider it. Then again, it may reside in the deep, dark, corners of the BYOND source code, where only the bravest dare to enter.