diff --git a/datamodels/2.x/itop-portal-base/portal/public/css/components/_form.scss b/datamodels/2.x/itop-portal-base/portal/public/css/components/_form.scss
index 0d5ff17c45..95aff82e27 100644
--- a/datamodels/2.x/itop-portal-base/portal/public/css/components/_form.scss
+++ b/datamodels/2.x/itop-portal-base/portal/public/css/components/_form.scss
@@ -7,6 +7,8 @@ $ipb--fieldset--border-radius: $common-border-radius-500 !default;
 $ipb--fieldset--legend--padding-y: $common-spacing-0 !default;
 $ipb--fieldset--legend--padding-x: 13px !default;
 
+$ipb--fieldset--inside--fieldset--background-color: $common-color-grey-100 !default;
+
 $ipb-field--has-tooltip-or-is-mandatory--vertical-align: top !default;
 $ipb-field--has-tooltip-or-is-mandatory--left: $common-spacing-200 !default;
 
@@ -19,13 +21,16 @@ $ipb-field--is-mandatory--font-size: 0.6rem !default;
 
 .form_fields {
   fieldset {
-    background-color: $common-color-grey-50;
+    background-color: $ipb--fieldset--background-color;
     padding: $ipb--fieldset--padding-y $ipb--fieldset--padding-x;
     border-radius: $ipb--fieldset--border-radius;
     border: $ipb--fieldset--border;
     legend {
       padding: $ipb--fieldset--legend--padding-y $ipb--fieldset--legend--padding-x;
     }
+    fieldset {
+      background-color: $ipb--fieldset--inside--fieldset--background-color;
+    }
   }
 }