change colors of series line chart

[zhengniu]

Esri/cedar#474
sorry for make it duplicated. please provide your suggestion to above link. Thanks alot

[zhengniu]

Thanks to ESRI folks @tomwayson and Courteny Claessens for their presentations "Charts and Custom Visualizations Beyond the Maps" and "Customizing Hub and Open Data Sites". Courteny showed how to steal code of customization such as JSON chart created by other site. and Tom showed the great example size City of Brampton Geohub. I found the solution is add colors code into overrides like this. it solved my issue. Great thanks to Tom and Courteny
"overrides": {
"colors": [
"#ffffd9",
"#edf8b1",
"#c7e9b4",
"#7fcdbb",
"#41b6c4",
"#1d91c0",
"#225ea8",
"#0c2c84",
]
}