Thank you for the coffee! To answer your question: unfortunately, no. The way the page works is that it first loads the search results and THEN requests the ratings from ReviewMeta. Sorry I couldn't be of more help.
Couldn't you add a filter to make that only shows results with this span id? <span id="reviewMetaB00NUDY5CI" title="PASS" style="color: rgb(255, 255, 255); font-weight: bold; background-color: rgb(0, 128, 0);">4.2</span>
Oh, you mean hide all the non-green ones AFTER the results page has been loaded? Yes, I suppose that's possible (although may result in inconsistent page sizes, in terms of number of items that show up per page, and will sometimes filter our all of them, so I will need to somehow handle that). I am not doing any new development on this project right now, but will add it to the list of enhancement for the next version of the site.