Not everything is as it seems. I tried the rather highly pinned baking soda/hydrogen peroxide trick to clean your cookie sheets and make them like new thingie and you can see my results above. I should have taken a picture of my before, but did not.
Source: onegoodthingbyjillee.com via D on Pinterest" target=_blank>So, not everything is as it seems. It was really hard scrubbing, and I left it for more than the two hours suggested. It does look better, though!