Rated 5 out of 5 stars

per cprasmussen el feb. 8, 2017 · enllaç permanent

Unzip the xpi file quote_colors-0.3-tb+sm.xpi
On line 14 and 22 set <em:maxVersion>52.0.*</em:maxVersion> (52 is completely random)
Zip all files to quote_colors-0.3-tb+sm.zip and rename to quote_colors-0.3-tb+sm.xpi