Edited Issue: DropDownExtender: Property "HighlightBackColor" only works with basic colors [27906]

Hello,

I want to use the DropDownExtender control and define the HighlightBackColor. If I set HighlightBackColor to "blue" or the Hex equivalent it works. If I set the HighlightBackColor to "#0065AD" it works not. What can I do?