scroll slider contrast
fix scrollbar, minimap slider transparencies
"minimapSlider.activeBackground": "#00000040",
"minimapSlider.background": "#00000020",
"minimapSlider.hoverBackground": "#00000060",
"scrollbarSlider.activeBackground": "#00000040",
"scrollbarSlider.background": "#00000020",
"scrollbarSlider.hoverBackground": "#00000060",