feature: color for counter number

src/styles/abstracts/_variables.scss

@@ -41,6 +41,7 @@
   /* Header's elements */
   --color-header-background: var(--color-white);
   --color-bell: var(--color-secondary);
+  --color-notification-counter-number: var(--color-white);
   --color-notification-summary: var(--color-grey-4);
   --solid-notifications-theme: var(--color-primary);
   --color-notification-item-border: var(--color-grey-12);

src/styles/base/header.scss

@@ -102,6 +102,10 @@ solid-notifications {
           left: 2.1rem;
           top: -3px;
         }
+
+        span {
+          color: var(--color-notification-counter-number);
+        }
       }
     }
   
@@ -175,12 +179,6 @@ solid-notifications {
               display: none;
             }
           }
-
-          .solid-notification__read {
-            read-badge[data-unread='unread'] {
-              
-            }
-          }
         }
       }
     }