C9 adds new support for coloring the LIST Control’s column headers and the column data area. You get there from the Extended Options tab. First turn on the “Enable Sort Header” checkbox, and then press the “Customize BowseBox Sort Header” button. Doing so will get you to this template dialog where you can set options as desired for coloring the both the Header and the Column area, with optional color variations for ascending versus descending sorts, so your users can easily visualize the sort order.