Bug 26962: (follow-up) Catch other #000066 occurrences

Bug 26962: (follow-up) Catch other #000066 occurrences

Addtional test steps:
-Check printing an invoice, inscept the page and make sure none of the colors are set to #000066
-For the OPAC you must rebuild the CSS ((https://wiki.koha-community.org/wiki/Working_with_SCSS_in_the_OPAC_and_staff_client)
-Look at some areas where you might print in the OPAC (try a list), inscept the page and make sure there is no colors set to #000066
-You can also use Jonathan's method of 'git grep -l -c 000066' to make sure no occurrences are left.
-I left macles.tt as is because I am not sure about that template

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>