diff --git a/src/BarChart.tsx b/src/BarChart.tsx
index 9af3a8b7..729b9223 100644
--- a/src/BarChart.tsx
+++ b/src/BarChart.tsx
@@ -130,7 +130,7 @@ class BarChart extends AbstractChart<BarChartProps, BarChartState> {
           y={((baseHeight - barHeight) / 4) * 3 + paddingTop}
           width={barWidth}
           height={2}
-          fill={this.props.chartConfig.color(0.6)}
+          fill={this.props.chartConfig.color(0.6, i)}
         />
       );
     });
@@ -205,7 +205,7 @@ class BarChart extends AbstractChart<BarChartProps, BarChartState> {
             
           }
           y={((baseHeight - barHeight) / 4) * 3 + paddingTop - 1}
-          fill={this.props.chartConfig.color(0.6)}
+          fill={this.props.chartConfig.color(0.6, i)}
           fontSize="12"
           textAnchor="middle"
         >
diff --git a/src/HelperTypes.ts b/src/HelperTypes.ts
index 0d5dde32..f973c036 100644
--- a/src/HelperTypes.ts
+++ b/src/HelperTypes.ts
@@ -6,7 +6,7 @@ export interface Dataset {
   data: number[];
 
   /** A function returning the color of the stroke given an input opacity value. */
-  color?: (opacity: number) => string;
+  color?: (opacity: number, index: number) => string;
 
   /** A function returning array of the colors of the stroke given an input opacity value for each data value. */
   colors?: Array<(opacity: number) => string>;
@@ -90,7 +90,7 @@ export interface ChartConfig {
   /**
    * Defines the base color function that is used to calculate colors of labels and sectors used in a chart
    */
-  color?: (opacity: number, index?: number) => string;
+  color?: (opacity: number, index: number) => string;
   /**
    * Defines the function that is used to calculate the color of the labels used in a chart.
    */
diff --git a/src/line-chart/LineChart.tsx b/src/line-chart/LineChart.tsx
index 895e911a..da3ebcb5 100644
--- a/src/line-chart/LineChart.tsx
+++ b/src/line-chart/LineChart.tsx
@@ -227,8 +227,8 @@ class LineChart extends AbstractChart<LineChartProps, LineChartState> {
     scrollableDotHorizontalOffset: new Animated.Value(0)
   };
 
-  getColor = (dataset: Dataset, opacity: number) => {
-    return (dataset.color || this.props.chartConfig.color)(opacity);
+  getColor = (dataset: Dataset, opacity: number, index: number) => {
+    return (dataset.color || this.props.chartConfig.color)(opacity, index);
   };
 
   getStrokeWidth = (dataset: Dataset) => {
@@ -316,7 +316,7 @@ class LineChart extends AbstractChart<LineChartProps, LineChartState> {
             fill={
               typeof getDotColor === "function"
                 ? getDotColor(x, i)
-                : this.getColor(dataset, 0.9)
+                : this.getColor(dataset, 0.9, i)
             }
             onPress={onPress}
             {...this.getPropsForDots(x, i)}
@@ -637,7 +637,7 @@ class LineChart extends AbstractChart<LineChartProps, LineChartState> {
           strokeLinejoin={linejoinType}
           points={points.join(" ")}
           fill="none"
-          stroke={this.getColor(dataset, 0.2)}
+          stroke={this.getColor(dataset, 0.2, index)}
           strokeWidth={this.getStrokeWidth(dataset)}
           strokeDasharray={dataset.strokeDashArray}
           strokeDashoffset={dataset.strokeDashOffset}
@@ -725,7 +725,7 @@ class LineChart extends AbstractChart<LineChartProps, LineChartState> {
           key={index}
           d={result}
           fill="none"
-          stroke={this.getColor(dataset, 0.2)}
+          stroke={this.getColor(dataset, 0.2, index)}
           strokeWidth={this.getStrokeWidth(dataset)}
           strokeDasharray={dataset.strokeDashArray}
           strokeDashoffset={dataset.strokeDashOffset}
@@ -782,7 +782,7 @@ class LineChart extends AbstractChart<LineChartProps, LineChartState> {
       <G key={Math.random()}>
         <LegendItem
           index={i}
-          iconColor={this.getColor(datasets[i], 0.9)}
+          iconColor={this.getColor(datasets[i], 0.9, i)}
           baseLegendItemX={baseLegendItemX}
           legendText={legendItem}
           labelProps={{ ...this.getPropsForLabels() }}