Nice extension! Request: Change colors? The chosen "standard" shades are fairly useless for red/green colorblind folks.

A hint that may help someone w/ a similar problem as I: I used this to identify broken links in my video collection after a data disaster. It took too long for it to scan each video file (TBs of data), so I made a "shadow" directory w/ all the same dir structure and file names but zero length files:
$ mkdir JustNames
$ find tv -type d -exec mkdir "JustNames/{}" \;
$ find tv -type f -exec touch "JustNames/{}" \;
Copied my html file to that dir (overwriting the zero-length version of it) and Link Checker processed >2,000 links in seconds.