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title: Controlling the Appearance of Charts
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# Controlling the Appearance of Charts

Visualforce charts are highly customizable. You can combine various types of data series, control the colors of most elements in a chart, and control the look of markers, lines, and so on.

You can customize the following:

-   Line and fill colors for data series elements.
-   Opacity of fill colors and lines.
-   Marker shape and color for data points.
-   Line width for connecting lines.
-   Highlighting for data elements.
-   Tick and grid line styles for axes.
-   Legends, labels, and “tool tip”-style rollover annotations.

Many of the components and attributes that provide this control are explained in the [Standard Visualforce Component Reference](https://developer.salesforce.com/docs/platform/salesforce-pages-developers-guide/components/pages-compref.md). Some effects require combinations of attributes and components, and are explained more completely in this document.