Style Override Highlighter's appearance (blue background) conflicts with the still existing feature of highlighting styles with different colors, in order to visually identify what parts of the text use what style, accessible via scripts such as Stylighter (http://www.indiscripts.com/post/2013/11/stylighter-1-4-for-indesign-cs4-cs5-cs6-cc).

Being able to set it back to red stroke over text instead of a background color, as it was before the Style Override Highlighter button was officially added, would allow to see at the same time the style being used (by the color of the background) and whether it had overrides (by the presence of a red stroke). That was possible before Style Override Highlighter, but not anymore.