A good start so far! Thanks! — It should only highlight and not change the layout with huge round frames arround every find (maybe a setting?). Also some very basic "dummy-regex" would be nice, so if you search for something like "40M" but can't remember the number, you could type "{n}M" and all number-M combinations would be highlighted. On the old "SearchWP" addOn I would have searched just for "M" and checked the output fast scrolling, with the huge borders around every "M" with this tool, you can't read the text any more... So maybe just the style would help already, but dummy-regex would be something extra nice. :)

Great add-on, a good substitute to SearchWP, still missing a few handy options (multiple colours for different words, jump to the next occurrence using the wheel button, integration with the Search bar, etc.). Also the rounded highlighting modifies the layout a bit too much. Thanks Kelvin !
Olivier.