The theme contains visualization settings that can be applied to a Chart. Each theme is specified with chart brushes and pens of different color spectrum.
If you want to change a given Brush, Pen or Font you should edit the respective property. User-set pens, brushes and fonts are considered with priority before those set by a theme. If you want the theme values to be applied to all properties, including custom-set call ResetThemeProperties before applying a Theme.
Default value for the Theme property is Theme.None.
