How to change the scrollbar color of the internal pdf viewer?

[trevorscheopner]

This question: How to change color of scrollbar? was answered and explained how to change the scrollbar color in the TeXStudio Editor. It works perfectly.

On my machine, the thumb and track of the scrollbar of TeXStudio's internal PDF viewer are almost the same, and I am wondering how to change the color of the scrollbar thumb, specifically of the internal PDF viewer? I assume probably it can also be done using qss, but I don't know how to get it to apply to the internal viewer.

[sunderme]

You are talking about the internal pdf viewer in an extra window (windowed) ?

[trevorscheopner]

Hi, here are two screenshots to clarify what I mean. I wrote a stylesheet.qss (whose text I include below). The stylesheet is applied to the editor as you can see (note the green color of the scroll bar) but it is not applied in the extra windowed pdf viewer that texstudio provides (note the nearly invisible scroll bar)

Contents of my stylesheet:

QScrollBar:horizontal { border: 2px solid grey; background: #343635; height: 15px; margin: 0px 20px 0 20px; }
QScrollBar::handle:horizontal { background: #32CC99; min-width: 20px; }
QScrollBar::add-line:horizontal { border: 2px solid grey; background: #343635; width: 20px; subcontrol-position: right; subcontrol-origin: margin; }
QScrollBar::sub-line:horizontal { border: 2px solid grey; background: #343635; width: 20px; subcontrol-position: left; subcontrol-origin: margin; }
QScrollBar:vertical { border: 2px solid grey; background: #343635; width: 15px; margin: 22px 0 22px 0; }
QScrollBar::handle:vertical { background: #32CC99; min-height: 20px; }
QScrollBar::add-line:vertical { border: 2px solid grey; background: #343635; height: 20px; subcontrol-position: bottom; subcontrol-origin: margin; }
QScrollBar::sub-line:vertical { border: 2px solid grey; background: #343635; height: 20px; subcontrol-position: top; subcontrol-origin: margin; }
QScrollBar::up-arrow:vertical, QScrollBar::down-arrow:vertical { border: 2px solid grey; width: 3px; height: 3px; background: white; }
QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical { background: none; }

[sunderme]

assuming we are talking windowed pdf viewer, that is fixed, i.e. stysheet.qss is applied