Changing Axis color leave initial color visible on chart

[rteuteu55]

Describe the bug
when an Axis color is changed the initial color of the Ticks and Subticks remain on the chart

To Reproduce
Steps to reproduce the behavior:

1. create a chart
2. Set Axis color (Ticks and Subticks for example)
3. change color (Ticks and Subticks)
4. See error

Expected behavior
I assume this initial color should not remain

Screenshots

Desktop (please complete the following information):

• OS: [Windows]
• Version [2.0.400 Beta]

[rteuteu55]

The button code in case it helps:

private void button3_Click(object sender, EventArgs e)
        {
            SolidColorPaint colorTmp = new SolidColorPaint(colorList[random.Next(0, 14)]);
            (yAxis[0] as Axis).LabelsPaint = colorTmp;
            (yAxis[0] as Axis).TicksPaint = colorTmp;
            (yAxis[0] as Axis).SubticksPaint = colorTmp;
            (yAxis[0] as Axis).SeparatorsPaint = colorTmp;
            //
            colorTmp = new SolidColorPaint(colorList[random.Next(0, 14)]);
            (yAxis[1] as Axis).LabelsPaint = colorTmp;
            (yAxis[1] as Axis).TicksPaint = colorTmp;
            (yAxis[1] as Axis).SubticksPaint = colorTmp;
            (yAxis[1] as Axis).SeparatorsPaint = colorTmp;
        }

[beto-rodriguez]

Thanks for the report, this issue is fixed with the referenced commit and will be included in the next version of the library.