common/static/common/styles/studio/_modal.sass

@@ -78,8 +78,6 @@
 
 .modal-header
   // TODO: consider changing background noise img raster to svg
-  background-blend-mode: multiply
-  background-color: var(--color-bg)
   border-bottom: 0
   display: block
   justify-content: center

common/static/common/styles/studio/_web-assets-overrides.sass

@@ -332,6 +332,10 @@ sup
   top: -1em
 
 /* Utilities. */
+// TODO: fix style utility in web-assets
+.bg-black
+  background-color: black !important
+
 .fade
   &:not(.show)
     height: 0 !important

common/templates/common/components/modal_asset.html

@@ -30,7 +30,7 @@
           {% include 'common/components/spoiler_alert.html' %}
         {% endif %}
 
-        <div class="col-lg-7 col-md-6 modal-header p-0" style="background-image: url('{% static 'common/images/asset-bg-noise-2x-opacity-20.png' %}')">
+        <div class="bg-black col-lg-7 col-md-6 modal-header p-0">
           <div class="align-items-center d-flex d-md-none justify-content-between px-3 py-4">
             <div>
               <h3 class="mb-0">{{ asset.name }}</h3>