#5488 Side-by-side diff: colorize both sides when a line is modified
In https://sourceforge.net/p/allura/git/ci/ba6c028fda9e6d8b048faf11cfa4e339c866eaf0/tree/Allura/allura/controllers/repository.py?diff=b09028b37593bdfda75069351be5c776bdf8bb8d&diformat=sidebyside line 590 is only colorized on the left, and not on the right.