feat: support customization of dot fill color, #181

style.go

@@ -53,6 +53,7 @@ type Style struct {
 	StrokeDashArray []float64
 
 	DotColor     drawing.Color
+	DotFillColor drawing.Color
 	DotWidth     float64
 
 	DotWidthProvider SizeProvider
@@ -429,10 +430,14 @@ func (s Style) GetFillOptions() Style {
 
 // GetDotOptions returns the dot components.
 func (s Style) GetDotOptions() Style {
+	fillColor := s.DotColor
+	if !s.DotFillColor.IsZero() {
+		fillColor = s.DotFillColor
+	}
 	return Style{
 		ClassName:       s.ClassName,
 		StrokeDashArray: nil,
-		FillColor:       s.DotColor,
+		FillColor:       fillColor,
 		StrokeColor:     s.DotColor,
 		StrokeWidth:     1.0,
 	}