Generate thumbnails for each segment in a timeline. For example, if a timeline is created with multiple segments containing a solid color, the thumbnail from only the first segment will be the shown for each segment on the dashboard. If the segments contain a solid color for red, green, blue, and yellow, the thumbnail for each segment will be from the first (red) segment. The name of the segment appears in the dashboard. (So you can end up with a red thumbnail image above the green segment name.) Having a unique thumbnail for each segment would be helpful.