Upfront - Theme Color isn't being changed


This article says that I should be able to change a theme color but somehow that's not happening.

I set a theme color, click ok and then save the page. When I come back into the page the old color is still there. In fact, the article says the colors should change instantly on the theme elements but that doesn't happen at all when I change the theme color.

Any ideas on what I'm doing wrong?