how to change color for column chart

[abi2023]

| timechart span=1mon count by status | addtotals row=t col=f labelfield=Total True False "Not available" fieldname="Total_Count" | eval percent=round(((True/Total_Count)*100),0)
| table Date Percentage

I chose visualization column chart but I get only default color. How can I customize the color base on the range.

0- 50% RED 50-70 AS YELLOW 70-100 AS Green. 

<option name="charting.fieldColors">{"<50":"#e600ac","Up to 60":"#ff0000","Up to 80":"#ffa31a","Up to 100":"#33cc33"}</option>

I try modifying but it did not work. 

Can anion help 
Thanks

[bowesmana · Accepted solution]

fieldColors is defining different colours for fields, not the values of those fields. You could convert the existing numbers to named ranges, doing something like this

| rangemap field=percent Low=0-49 Medium=50-59 Threshold=60-79 High=80-100
| chart max(percent) over _time by range

and then your charting.fieldColors could be

<option name="charting.chart.stackMode">stacked</option>
<option name="charting.fieldColors">{"Low":"#e600ac","Medium":"#ff0000","Threshold":"#ffa31a","High":"#33cc33"}</option>

if you make it a stacked bar chart, then you will collapse the gaps as you only have one range per date. Call the ranges what you like

[bowesmana]

and if you don't want the legend, turn that off too