Plastic head on key cracked (came w red dot)

Plastic head on master key cracked (w red dot)

All my square keys have red dots which are master keys.

I used crazy glue but it still cracked... multiple times. I didn't want to replace mine, it came with a red dot originally, but the replacement parts from the dealers and other vendors like performanceproducts.com had plastic heads without the red dots.

Where can I get the replacement plastic head WITH red dot? Did other W124 come without the red dots? Why did they get rid of the red dots? Cheers