Merge pull request #3832 from mempool/mononaut/fix-graph-filter-colors

fix graph filter dropdown colors

frontend/src/app/components/statistics/statistics.component.ts

@@ -196,7 +196,7 @@ export class StatisticsComponent implements OnInit {
         this.feeLevelDropdownData.push({
           fee: fee,
           range,
-          color: _chartColors[i - 1],
+          color: _chartColors[i],
         });
       }
     });