Silicones, also known as polysiloxanes, are polymers that include any inert, synthetic compound made up of repeating units of siloxane, which is a chain of alternating silicon atoms and oxygen atoms, combined with carbon, hydrogen, and sometimes other elements.
Silicone does contain Silicon. That was what I accredited the loss of the case colors to, of course I could have been wrong. It was however the First & Last time I used oil containing silicone on a case colored part & the only time I ever had a problem. The opinion it was the cause did not really seem unfounded to me, & still doesn't. Anyone can take it for whatever they feel its worth.