How to change Horizontal Axis level color of pie chart or funnel chart2

Hi

I am using D365 CE, Version - 1710 (9.1.0.6023) online

There, i have created a pie chart or funnel chart of product category wise sales total. Now, i want to change the color as per product category. Like, Gold - Yellow, Diamond - lightgray, Silver - Silver, platinum - Gray, Stone - Green.

While modifying XML of the chart, it is not appearing as per product category where as it is coming as per sales value. Like - greater total - Yellow, 2nd greater total - lightgray, 3rd greater total- Silver, 4th greater total - Gray, 5th greater total- Green.

Here is the screenshot for your reference

Here is the default XML

<visualization>
  <visualizationid>{6DA54825-C391-E911-A977-000D3AF075C4}</visualizationid>
  <name>Category Wise Purchase</name>
  <primaryentitytypecode>acx_invoiceheaderline</primaryentitytypecode>
  <datadescription>
    <datadefinition>
      <fetchcollection>
        <fetch mapping="logical" aggregate="true">
          <entity name="acx_invoiceheaderline">
            <attribute name="acx_itemtype" groupby="true" alias="_CRMAutoGen_groupby_column_Num_0" />
            <attribute name="acx_netamount_value" aggregate="sum" alias="_CRMAutoGen_aggregate_column_Num_0" />
          </entity>
        </fetch>
      </fetchcollection>
      <categorycollection>
        <category alias="_CRMAutoGen_groupby_column_Num_0">
          <measurecollection>
            <measure alias="_CRMAutoGen_aggregate_column_Num_0" />
          </measurecollection>
        </category>
      </categorycollection>
    </datadefinition>
  </datadescription>
  <presentationdescription>
    <Chart Palette="None" PaletteCustomColors="91,151,213; 237,125,49; 160,116,166; 255,192,0; 68,114,196; 112,173,71; 37,94,145; 158,72,14; 117,55,125; 153,115,0; 38,68,120; 67,104,43; 124,175,221; 241,151,90; 186,144,192; 255,205,51; 105,142,208; 140,193,104; 50,125,194; 210,96,18; 150,83,159; 204,154,0; 51,90,161; 90,138,57;">
      <Series>
        <Series ShadowOffset="0" IsValueShownAsLabel="True" Font="{0}, 9.5px" LabelForeColor="59, 59, 59" ChartType="Funnel" CustomProperties="FunnelLabelStyle=Outside, FunnelNeckHeight=0, FunnelPointGap=1, FunnelNeckWidth=5 ">
          <SmartLabelStyle Enabled="True" />
        </Series>
      </Series>
      <ChartAreas>
        <ChartArea>
          <Area3DStyle Enable3D="false" />
        </ChartArea>
      </ChartAreas>
      <Legends>
        <Legend Alignment="Center" LegendStyle="Table" Docking="right" IsEquallySpacedItems="True" Font="{0}, 11px" ShadowColor="0, 0, 0, 0" ForeColor="59, 59, 59" />
      </Legends>
      <Titles>
        <Title Alignment="TopLeft" DockingOffset="-3" Font="{0}, 13px" ForeColor="0, 0, 0" />
      </Titles>
    </Chart>
  </presentationdescription>
  <isdefault>false</isdefault>
</visualization>

Please Help.

Thanks

Kalpamay