My wife drew this for me over 9 years ago now, and I've used it everywhere since. I colored it soon after she drew it (literally the next day according to the timestamps on the images) but for some reason I only ever used the black and white one here and in the old place. Decided it was finally time to switch the colorized version.
(edit) The file was listed as "comic test" but I believe it was actually part of some test drawings to decide on the style we wanted to use for our youtube channel at the time. Here they were after I did some color tests on them.
We went with a couple different styles after deciding we didn't like any of these.
This was what we first decided on because of it's simplicity.
Then we went with something slightly more true to us.
That said, I always had a fondness for the original, which is why it became my forum avatar.