In the new layout (which I like), red is used to indicate the current selection, along with the vertical line. Kudos for the vertical line - people that are color blind will appreciate that. As for the color, red, I think, is a mistake. Red is an indicator of danger, and this is consistent across cultures, I believe. Also, red is not very different from the color it's distinguishing from - orange. The non-selected items are orange. If you want a suggestion for a different color, how about purple?
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