Overlay

The appearance settings for the overlay of the series elements.

gradient? "glass" | "none" | "roundedBevel" | "sharpBevel"

The gradient of the Chart series.

The supported values are:

• "glass"—Applicable for the Bar, Column, and Candlestick series.
• "none"
• "roundedBevel"—Applicable for the Donut and Pie series.
• "sharpBevel"—Applicable for the Donut and Pie series.