What makes an artistic GIF?

First, consider that "art" is contested. It is not just "beauty is in the eye of the beholder," which is more about whether something is pretty art. The very idea of whether a shadow made from lying in the street before a rain (Andy Goldsworthy) is art is controversial. Or is dance art? Or an emoticon?

The answer of what makes an artistic GIF will therefore never be conclusive. That's fine. But what makes a GIF artistic can still be tentatively answered. What do you think should be the criteria?

One thing that makes an artistic GIF is color. In particular, a change to a single color gradient makes things look consistent and pleasing.

This GIF color changing tool does the job without Photoshop and online.