I've created a circular sweep using a spline, then  created several sections by applying split lines.  I'm trying to select alternating sections to apply a green color to (in order to animate signal flow through a cable).  What keeps happening is, I select the faces I want to be the specific color, click ok in the appearance manager, and the color will randomly switch faces.  I've tried working around this by applying a part color and selecting all other faces but the issue persists.

Has anyone else seen this?