Bar chart colors

Steel challenge match. Could you pls explain the different shades of colors used in stacked bars and and also why some are dark and not.

For Steel Challenge and other time-based scored matches the darker part shows the best time for a given stage.

If I remember correctly, for Steel Challenge that the “best time” is also as set in the SC baseline times (ones used to calculate classification).

The even darker one on your picture for the 2nd bar is just a selected one you have tapped on.