dev-lang/ucblogo-5.5 installs Logo mode support for Emacs. This should be activated via the Emacs site-init file. Patch for ebuild and site-init file will follow.
Created attachment 131248 [details, diff] ucblogo-5.5.ebuild.patch Proposed modification for the ebuild to install a site-init file for Emacs.
Created attachment 131250 [details] files/50ucblogo-gentoo.el The site-init file itself, it should go to ${FILESDIR}.
Created attachment 131907 [details] files/50ucblogo-gentoo.el Updated site file: disables intrusive fonts and colors.
Tom, I know you talked with ulm about this. If you are too busy to fix it yourself, we can commit it.
Fixed in CVS