diff --git a/src/app/modules/analytics-config/services/donut-form-builder/donut-form-builder.service.ts b/src/app/modules/analytics-config/services/donut-form-builder/donut-form-builder.service.ts
index 1d214811..51ba93ed 100644
--- a/src/app/modules/analytics-config/services/donut-form-builder/donut-form-builder.service.ts
+++ b/src/app/modules/analytics-config/services/donut-form-builder/donut-form-builder.service.ts
@@ -37,6 +37,7 @@ import { WidgetFormBuilder } from '../widget-form-builder';
 import { ArlasColorService } from 'arlas-web-components';
 
 import { WidgetConfigFormGroup } from '@shared-models/widget-config-form';
+import { addToColorManualValuesCtrl } from '@utils/tools';
 
 export class DonutConfigForm extends WidgetConfigFormGroup {
 
@@ -116,15 +117,15 @@ export class DonutConfigForm extends WidgetConfigFormGroup {
               (Array.from(this.customControls.dataStep.aggregationmodels.value)[0] as any).field)
               .then((keywords: Array<string>) => {
                 keywords.forEach((k: string, index: number) => {
-                  this.addToColorManualValuesCtrl({
+                  addToColorManualValuesCtrl({
                     keyword: k,
                     color: this.colorService.getColor(k)
-                  }, index);
+                  }, this.globalKeysToColortrl, index);
                 });
-                this.addToColorManualValuesCtrl({
+                addToColorManualValuesCtrl({
                   keyword: 'OTHER',
                   color: defaultConfig.otherColor
-                });
+                }, this.globalKeysToColortrl);
 
                 const sub: Subscription = dialog.open(DialogColorTableComponent, {
                   data: {
@@ -140,7 +141,7 @@ export class DonutConfigForm extends WidgetConfigFormGroup {
                       result.forEach((kc: KeywordColor) => {
                         /** after closing the dialog, save the [keyword, color] list in the ARLAS color service */
                         (this.colorService.colorGenerator as ArlasColorGeneratorLoader).updateKeywordColor(kc.keyword, kc.color);
-                        this.addToColorManualValuesCtrl(kc);
+                        addToColorManualValuesCtrl(kc, this.globalKeysToColortrl);
                       });
                     }
                     sub.unsubscribe();
@@ -195,22 +196,6 @@ export class DonutConfigForm extends WidgetConfigFormGroup {
       }
     }
   };
-
-  private addToColorManualValuesCtrl(kc: KeywordColor, index?: number) {
-    if (!Object.values(this.globalKeysToColortrl.controls)
-      .find(keywordColorGrp => keywordColorGrp.get('keyword').value === kc.keyword)) {
-      const keywordColorGrp = new FormGroup({
-        keyword: new FormControl(kc.keyword),
-        color: new FormControl(kc.color)
-      });
-      if (index !== undefined) {
-        this.globalKeysToColortrl.insert(index, keywordColorGrp);
-      } else {
-        this.globalKeysToColortrl.push(keywordColorGrp);
-      }
-    }
-  }
-
 }
 
 @Injectable({
diff --git a/src/app/modules/analytics-config/services/powerbar-form-builder/powerbar-form-builder.service.ts b/src/app/modules/analytics-config/services/powerbar-form-builder/powerbar-form-builder.service.ts
index b365b8b2..e3647143 100644
--- a/src/app/modules/analytics-config/services/powerbar-form-builder/powerbar-form-builder.service.ts
+++ b/src/app/modules/analytics-config/services/powerbar-form-builder/powerbar-form-builder.service.ts
@@ -229,12 +229,12 @@ export class PowerbarConfigForm extends WidgetConfigFormGroup {
                   addToColorManualValuesCtrl({
                     keyword: k,
                     color: this.colorService.getColor(k)
-                  }, this.globalKeysToColortrl.controls, index);
+                  }, this.globalKeysToColortrl, index);
                 });
                 addToColorManualValuesCtrl({
                   keyword: 'OTHER',
                   color: defaultConfig.otherColor
-                }, this.globalKeysToColortrl.controls);
+                }, this.globalKeysToColortrl);
 
                 const sub = dialog.open(DialogColorTableComponent, {
                   data: {
@@ -249,7 +249,7 @@ export class PowerbarConfigForm extends WidgetConfigFormGroup {
                       result.forEach((kc: KeywordColor) => {
                         /** after closing the dialog, save the [keyword, color] list in the ARLAS color service */
                         (colorService.colorGenerator as ArlasColorGeneratorLoader).updateKeywordColor(kc.keyword, kc.color);
-                        addToColorManualValuesCtrl(kc, this.globalKeysToColortrl.controls);
+                        addToColorManualValuesCtrl(kc, this.globalKeysToColortrl);
                       });
                     }
                     sub.unsubscribe();
diff --git a/src/app/utils/tools.ts b/src/app/utils/tools.ts
index 9dc29bb2..535cee7d 100644
--- a/src/app/utils/tools.ts
+++ b/src/app/utils/tools.ts
@@ -160,17 +160,17 @@ export function camelize(str) {
   });
 }
 
-export function addToColorManualValuesCtrl(kc: KeywordColor, controls: any, index?: number) {
-  if (!Object.values(controls)
-    .find(keywordColorGrp => (keywordColorGrp as any).get('keyword').value === kc.keyword)) {
+export function addToColorManualValuesCtrl(kc: KeywordColor, fa: FormArray, index?: number) {
+  if (!Object.values(fa.controls)
+    .find(keywordColorGrp => keywordColorGrp.get('keyword').value === kc.keyword)) {
     const keywordColorGrp = new FormGroup({
       keyword: new FormControl(kc.keyword),
       color: new FormControl(kc.color)
     });
     if (index !== undefined) {
-      controls.insert(index, keywordColorGrp);
+      fa.insert(index, keywordColorGrp);
     } else {
-      controls.push(keywordColorGrp);
+      fa.push(keywordColorGrp);
     }
   }
 }