Configure Line Color on Line Chart

[rheubach]

The following colors on the Line chart are static, but need to be configurable:

• The stroke attribute on each line ( it would nice to have an example with multiple alternating colors.
• the top color value in the gradient for the bottom line fill <stop offset="0%" style="stop-color:rgba(54, 209, 220, .5);stop-opacity:1"></stop>