Update and more background in the salt lake tribune today.
https://www.sltrib.com/sports/utah-utes/2021/08/30/rice-eccles-stadiums-pink/
I took a close look and some pictures on a couple different seats during the open house. I didn’t know that they were using a blow torch at the time. I couldn’t tell. Random sticker residue on the back of a couple of seats were there. And the little mold seams on the edges from the injection molding seem unaffected. So I though they were using a chemical. Nope. Propane. As in that video forwarded by a bunch of donors and fans. Would have been $1M+ to replace the pink seats.