[Qt-interest] CSS background color of QScrollArea's QScrollBar

[James Yan]

Hey All,

  I try to change background color of scrollbar's "groove" and handle, and make add-line/sub-line invisible with following CSS:

QScrollBar:vertical          {background: rgba(35,35,35,255)};
QScrollBar::handle:vertical  {background: rgba(60,60,60,255)};
QScrollBar::add-line:vertical{height: 0px;                  };
QScrollBar::sub-line:vertical{height: 0px;                  };

Yes, it's the vertical scrollbar of QScrollArea. 
Everything fine, but the background color of scrollbar's "groove", it's not the solid color of rgba(35,35,35,255), but with white grid on it.
What's wrong with it? may i just simply set background color into rgba(35,35,35,255)?

thanks.
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