Editor... Glitch? [Gradients]

[Flexio]

Hey. I like to make concept maps in the map editor using geoms, and then create graphics later, so I'm playing around with geoms a lot. I'm aware of color-changing abilities, but a few days ago I was in [tbd_pit], editing the hull of one of the "grass" geoms, and one of the vertexes suddenly formed a gradient of white to green, with the strongest white at the vertex I had been moving.

I searched lamsbro's guide, and any others I could find, but none of them mentioned gradients.

I apologize, but I don't have a screenshot. I do however, have a recreation of what it looked like, using added gradient shapes in photoshop.



Is this a one-time glitch? Or a "bonus" feature not mentioned in any guides? Finally, has anyone else had similar experiences?