Sorry I think the one I was thinking of was Megaman 2. I did find a link for you. Starts at 2:36.
http://www.nicovideo.jp/watch/sm23825129Also you might be interested in the Final Fantasy 6 memory overwrite bug that was discovered in 2016 as well. It uses the Window Color menu settings as the data reference.
Btw regarding the Megaman 2 RTA, there's an even more ridiculous collision bug being used around 11:30 http://www.nicovideo.jp/watch/sm28321223