unable to make waterfall chart coloring

Hello,

I am facing issues while trying to make color coding for different strokes in waterfall chart.

I havve 2 waterfall charts and all the strokes need different color. I am trying to do this using CSS code.

I am using below code.

.waterfall1 .v-waterfallgroup:nth-child(1) rect{ fill:#000000!important;}

.v-waterfallgroup:nth-child(2) rect{ fill:#366D6D!important;}

.v-waterfallgroup:nth-child(3) rect{ fill:#f00000!important;}

.waterfall2 .v-waterfallgroup:nth-child(1)_c1 rect{ fill:#ffff00!important;}

.v-waterfallgroup:nth-child(2) rect{ fill:#00ff40!important;} 

.v-waterfallgroup:nth-child(3) rect{ fill:#8000ff!important;}

Please help.

Best Regards

Bikash