Context: The ABS plastic used in the casing of some older SNES and Super Famicom consoles is particularly susceptible to oxidization on exposure to air, likely due to an incorrect mixture of the stabilizing or flame retarding additives. This, along with the particularly light color of the original plastic, causes affected consoles to quickly become yellow; if the sections of the casing came from different batches of plastic, a "two-tone" effect results. The color can sometimes be restored with UV light and a hydrogen peroxide solution.

Question: What material is the SNES case made of?
Answer: ABS plastic

Question: What chemical process turned some SNES cases yellow?
Answer: oxidization

Question: What mixture error in the plastic caused some SNES cases to turn yellow?
Answer: an incorrect mixture of the stabilizing or flame retarding additives

Question: How can SNES yellowing sometimes be reversed?
Answer: with UV light and a hydrogen peroxide solution

Question: Why would some SNESes be only partly yellow?
Answer: if the sections of the casing came from different batches of plastic

Question: What color did affected consoles become after exposure to UV light?
Answer: Unanswerable

Question: What are flame retarding additives susceptible to?
Answer: Unanswerable

Question: What does hydrogen peroxide inside the cases cause if they came from different batches of plastic?
Answer: Unanswerable

Question: What does the light color of additives help restore to a console?
Answer: Unanswerable

Question: What is caused due to an incorrect mixture of a hydrogen peroxide solution during manufacturing?
Answer: Unanswerable