Define appearance of this scrollbar.
property SRVControlStyle: TSRVControlStyle;
Customized scrollbar appearance is supported only in Delphi and C++Builder. In Lazarus, scroll-bars always have the standard system appearance.
srvcsSimple (if RVControlsPainter.Theme = rvctPaleBlue):
If UseXPThemes = True, the scrollbar uses Windows themes (visual styles), if they are available. Otherwise, the scrollbar has 3d look. When the scrollbar is inserted in a TSRichViewEdit document, theme drawing is scaled not completely correctly. We recommend using srvcsSimple instead.
This is the only control in ScaleRichView/SRVControls that has SRVControlStyle = srvcsClassic by default.