balsa does not show emails in color when viewing HTML email. I filed a bug upstream at: http://bugzilla.gnome.org/show_bug.cgi?id=314291 which was resolved. The resolution was to allow --with-gtkhtml flag for configure to be able to pick a specific version of libgtkhtml to compile against. Currently balsa builds with libgtkhtml3 by default, however, libgtkhtml3 does not display color in HTML email messages. Therefore, to be able to view color emails, balsa needs to be forced to be built with libgtkhtml2. I don't know the syntax for .ebuilds so, I just tweaked the current balsa ebuild and replaced: G2CONF="${G2CONF} \ $(use_with ssl) \ $(use_with ldap) \ $(use_with sqlite) \ $(use_with kerberos gss) \ $(use_with gnome) \ $(use_enable gtkhtml) \ $(use_enable threads) \ $(use_enable pcre) \ " with: G2CONF="${G2CONF} \ $(use_with ssl) \ $(use_with ldap) \ $(use_with sqlite) \ $(use_with kerberos gss) \ $(use_with gnome) \ $(use_enable threads) \ $(use_enable pcre) \ " G2CONF="${G2CONF} --with-gtkhtml=2" Someone more knowledgable can perhaps make a local "color" USE flag to force the use of libgtkhtml2?
Fixed in 2.3.8 ebuild. Please sync and test in ~2 hours.