Hi Kelly
In Story Map Tour, the Color tab in the Settings doesn't apply to the new 'side-panel' layout: Those color settings only apply to the original two layouts ('three-panel' and 'integrated'), so we disable that tab if you are using the side-panel layout. In the new side-panel layout, the color of the layout elements: header, the cover page banner, and the panel where the captions appear, is fixed in our design. So, for example you can't change the color of the header at the top of the layout like you can in the other Map Tour layouts: we use black for the side-panel layout's header, so it matches the appearance of the header in the Story Map Cascade app. We could relax this restriction in a future release if it is something that a lot of people would like to be able to set, but for this first release we aimed to unify the look of the side-panel layout.
Hope that helps.
Rupert