Rated 5 out of 5 stars

by Maggard on Jan. 26, 2012 ·

Install Quote-Colors to current the versions of Thunderbird and SeaMonkey
01. Create a new folder named Work
02. Copy quote_colors-0.3-tb+sm.xpi to the Work Folder
03. In the Work folder rename quote_colors-0.3-tb+sm.xpi to quote_colors-0.3-tb+sm.Mod.xpi.zip
04. Extract the following folder from the quote_colors-0.3-tb+sm.Mod.xpi.zip file: install.rdf to the Work Folder
05. In the Work folder open the install.rdf file in your text editor.
06. Go to Line 11 in the file or search for <em:targetApplication>
07. For Thunderbird, Go to Line 16 <em:maxVersion>#.*</em:maxVersion>
08. Change the # for the line to the current version, leaving the .* (e.g. for Version 10.2 it should read <em:maxVersion>10.*</em:maxVersion>
09. For SeaMonkey, Go to Line 24 <em:maxVersion>#.*</em:maxVersion>
10. Change the # for the line to the current version, leaving the .* (e.g. for Version 10.2.5 it should read <em:maxVersion>10.*</em:maxVersion>
11. Save the file in the Work Folder, ensuring it maintains the name of install.rdf
12. Copy install.rdf into the compressed file created in Step 03 above.
13. Verify to overwrite the existing file in the compressed file created in Step 03 above.
14. Rename quote_colors-0.3-tb+sm.Mod.xpi.zip to quote_colors-0.3-tb+sm.Mod.xpi
15. Open the desired application (Thunderbird/SeaMonkey)
16. Select Tools->Add-ons Manager
17. Select the option Install Add-on from File
18. Browse to the Work folder
19. Select the modified add-on installation file: quote_colors-0.3-tb+sm.Mod.xpi
20. Click okay and follow the prompts to install.

Thanks to @Robert Kofler https://addons.mozilla.org/en-US/thunderbird/user/5914218/ and @Mozzied https://addons.mozilla.org/en-US/thunderbird/user/4710265/ for giving me the pieces to get this great add-on to work with SeaMonkey 2.6.1