Neither have I yet Dave.
We just went into the condo and tried TGP and pro-spotter on it. Neither one did much of anything in the way of removing the color and we didn’t try all the spots. Be careful with iodine, it can bleed. The small spots she hadn’t touched did bleed color, but would not fully come out. She called me back about a week or two after our visit, and said the spots had lightened up and wanted us to come back and try removing the rest next time we were in the building. When I went back, they were noticeably lighter which suprised me. Tried the rest of the spots, and like the first time I didn’t get any color out of them. Hopefully they lighten up over time too.