QSlider - how to color the space

i need to design my QSlider ...

开发者_开发百科I have start point and end point on the slider bar

the start point and the end point is movable by the user

now i need to color the space between the start point and the end point

Please let me know your helps and suggestion on this

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Link for Qt 4.8 (slider customization):

http://doc.qt.io/qt-4.8/stylesheet-examples.html#customizing-qslider

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In general for coloring task "Qt Style Sheets" is very useful.