So you want to style the SciChartOverview or SciChartScrollbar?

Please see these articles which have ControlTemplates and styling tips:

• SciChartScrollbar API - documentation article about Scrollbars in SciChart
• Scrolling a Chart with the SciChartOverview - documentation article about the SciChartOverview control
• Creating a Custom SciChartOverview with many series - demonstrates an FAQ using our scrollbar API
• Creating a Custom Theme for SciChart - demonstrates our ThemeProvider API to set colors and brushes easily