Support for color assignment in stacked area charts

[plallin]

In Wavefront, it is possible to assign specific colors to a stacked area chart using the sourceColor parameter within sources. Example:

"sources": [
                {
                  "name": "Healthy",
                  "query": "...",
                  "queryType": "WQL",
                  "disabled": false,
                  "secondaryAxis": false,
                  "querybuilderEnabled": false,
                  "sourceDescription": "",
                  "sourceColor": "rgba(103,202,22,1)"
                },
                {
                  "name": "Unhealthy",
                  "query": "....",
                  "queryType": "WQL",
                  "disabled": false,
                  "secondaryAxis": false,
                  "querybuilderEnabled": false,
                  "sourceDescription": "",
                  "sourceColor": "rgba(255,129,107,1)"
                }

This produce a chart like this:

For viewer, it is easy to understand that red = unhealthy and green = passed healthy.\

This parameter is not yet available with the Wavefront terraform provider. This default to the following chart:

The color scheme here is ambiguous to viewers and doesn't make it clear what the healthy / unhealthy ratio is. User needs to hover the chart in order to learn that information.

The proposal to is to introduce a new parameter source_color as part of the source object in order to make it possible for dashboard maintainer to assign specific colors to their stacked area chart instead of relying on defaulted colors.