Vue Chart - series.selectionStyle
Configures the appearance adopted by the series when a user selects it.
Declared in commonSeriesSettings, selectionStyle applies to all series in the chart. Declared in a series configuration object, selectionStyle applies to this particular series only. The series-specific selectionStyle overrides the common one.
border
Configures the appearance adopted by the series border (in area-like series) or the series point border (in bar-like and bubble series) when a user selects the series.
color
Specifies the color of the series in the selected state.
This property supports the following colors:
- Hexadecimal colors
- RGB colors
- RGBA colors
- Predefined/cross-browser color names
- Predefined SVG colors
- Paint server address
dashStyle
Specifies the dash style of the series line when the series is in the selected state. Applies only to line-like series.
The following dash styles are available:
- solid 
 The border is a solid, continuous line.
- longDash 
 The border is displayed using long dashes.
- dash 
 The border is displayed using dashes.
- dot 
 The border is displayed using dots.
- Any combination of 'longDash', 'dash' and 'dot' 
 The border is displayed by repeating the specified combination. For instance, 'dashdotdash'.
hatching
Configures hatching that applies when a user selects the series.
Hatching is filling an area or a bar (depending on the series type) with parallel diagonal lines. In the Chart UI component, it applies when a user selects a series.
 

width
Specifies the pixel-measured width of the series line when the series is in the selected state.
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