Interesting to compare the coloring to an earlier version:

This is a community dedicated to the webcomic known as the Perry Bible Fellowship, created by Nicholas Gurewitch.
https://www.patreon.com/perryfellow
New comics posted whenever they're posted to the site (rarer nowadays but still ongoing). Old comics posted every day until we're caught up
Interesting to compare the coloring to an earlier version:

The colour means you're more likely to have your eye drawn there and disregard the background. I prefer it.
Oh nice never saw this one. Why'd this one get taken down? Is there a list of archived comics no longer live?
There's no list that I know of, I had to go trawl through archive.org to find everything. Not really sure why it got taken down, other than that the author has said in interviews that he's kind of a perfectionist and enjoys scrapping art that he's already done if he thinks it isn't good enough.
You can kind of see that with my other comment with the older version of this strip. He redid it at least once to add some subtle coloring to draw the viewer's eye towards the background where they see the vulture and get the joke. Probably just a lot of that sort of thing.