overlay/overlay.go
func (p HighlightRectParams) WithOutlineColor(outlineColor *cdp.RGBA) *HighlightRectParams {
	p.OutlineColor = outlineColor
	return &p
}
func (p HighlightRectParams) WithOutlineColor(outlineColor *cdp.RGBA) *HighlightRectParams {
	p.OutlineColor = outlineColor
	return &p
}
// WithOutlineColor the highlight outline color (default: transparent).