These properties define a color for all risers, for all risers in an individual series, or for an individual riser identified by a series and group number. If a group number is not specified, the color is also applied to the series icon in the legend area.
series: [ { series: Number, group: Number, // Optional color: 'string' } ]
series; zero-based series number. If the series does not exist in the chart, the property is ignored.
group; (optional) zero-based group number. If not specified, color is applied to all groups in the series.
color: a color defined by a keyword or numerical specification string or a gradient defined by a string.
blaProperties: {orientation: 'vertical'}, series: [ {series: 0, color: 'aquamarine'}, {series: 1, color: 'burlywood'}, {series: 2, color: 'coral'}, ]
blaProperties: {orientation: 'vertical'}, series:[ {series: 0, color: 'linear-gradient(0%,0%,100%,0%, 20% darkred, 95% red)'}, {series: 1, color: 'linear-gradient(0%,0%,100%,0%, 20% green, 95% lightgreen)'}, {series: 2, color: 'linear-gradient(0%,0%,100%,0%, 20% saddlebrown, 95% orange)'}, {series: 3, color: 'linear-gradient(0%,0%,100%,0%, 20% teal, 95% cyan)'} ]