Add background on Newsletter module

src/style/organisms/_newsletter.scss

@@ -38,10 +38,18 @@
     // Variants
     // Default color
     &--default {
-        background-color: $color-tertiary;
+        background: $color-tertiary 50% 0 / cover url(#{$dir-img}/newsletter-beige.jpg) no-repeat;
-    }
+
+        .newsletter-form__email {
+            background: $color-tertiary;
+        }
+     }
     // Light
     &--light {
-        background-color: $color-cream;
+        background: $color-cream 50% 0 / cover url(#{$dir-img}/newsletter-cream.jpg) no-repeat;
+
+        .newsletter-form__email {
+            background: $color-cream;
+        }
     }
 }