By looking at the colorgcc homepage:
We can see it's now also hosted at GitHub:
This github repo seems active, with patches being applied this year (2011), as well as a few forks (one of them applied patches from Ubuntu, which added g77 and gcj).
Anyway, my suggestion is to get the Gentoo patches (which are from 2003/2009) and push them upstream. The Gentoo solution seems great because it allows colorgcc to work with whatever name the gcc compiler has.
In my case, Gentoo colorgcc works with "avr-gcc" directly out of the box, which is impossible (or more difficult) with vanilla version, because that name is not officially supported.
By the way, I believe upstream would prefer bug 234166 fixed before accepting the patches.
It is rather unmaintained in Gentoo, care to help?
(In reply to comment #1)
> It is rather unmaintained in Gentoo, care to help?
Just submitted a patch to that other bug. Anything else that I might help? (bear with me as I'm not familiar with Perl code)
* commit 3d0f4af
| Author: Patrice Clement <email@example.com>
| Date: Mon Aug 24 17:13:19 2015 +0000
| dev-util/colorgcc: EAPI 5 bump. Update HOMEPAGE and fixes bug 385761.
| Package-Manager: portage-2.2.18
| Signed-off-by: Patrice Clement <firstname.lastname@example.org>
| create mode 100644 dev-util/colorgcc/colorgcc-1.3.2-r6.ebuild