diff --git a/gulpfile.js b/gulpfile.js
index 4e3518a6c..1a9d91253 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -986,7 +986,6 @@ function buildComponents(defines, dir) {
   const COMPONENTS_IMAGES = [
     "web/images/annotation-*.svg",
     "web/images/loading-icon.gif",
-    "web/images/shadow.png",
   ];
 
   return merge([
diff --git a/web/images/shadow.png b/web/images/shadow.png
deleted file mode 100644
index a00061ac7..000000000
Binary files a/web/images/shadow.png and /dev/null differ
diff --git a/web/pdf_viewer.css b/web/pdf_viewer.css
index d0a86bda7..ac3fe93e8 100644
--- a/web/pdf_viewer.css
+++ b/web/pdf_viewer.css
@@ -22,7 +22,6 @@
   --pdfViewer-padding-bottom: 0;
   --page-margin: 1px auto -8px;
   --page-border: 9px solid transparent;
-  --page-border-image: url(images/shadow.png) 9 9 repeat;
   --spreadHorizontalWrapped-margin-LR: -3.5px;
   --scale-factor: 1;
 }
@@ -32,7 +31,6 @@
     --pdfViewer-padding-bottom: 9px;
     --page-margin: 8px auto -1px;
     --page-border: 1px solid CanvasText;
-    --page-border-image: none;
     --spreadHorizontalWrapped-margin-LR: 3.5px;
   }
 }
@@ -66,7 +64,6 @@
   position: relative;
   overflow: visible;
   border: var(--page-border);
-  border-image: var(--page-border-image);
   background-clip: content-box;
   background-color: rgba(255, 255, 255, 1);
 }
diff --git a/web/viewer-geckoview.css b/web/viewer-geckoview.css
index 3009c167c..d7e6e79e6 100644
--- a/web/viewer-geckoview.css
+++ b/web/viewer-geckoview.css
@@ -23,7 +23,7 @@
   --doorhanger-icon-opacity: 0.9;
 
   --main-color: rgba(12, 12, 13, 1);
-  --body-bg-color: rgba(237, 237, 240, 1);
+  --body-bg-color: rgba(212, 212, 215, 1);
   --scrollbar-color: auto;
   --scrollbar-bg-color: auto;
   --dialog-button-border: none;
diff --git a/web/viewer.css b/web/viewer.css
index 23608f5bd..a6c0f997a 100644
--- a/web/viewer.css
+++ b/web/viewer.css
@@ -26,7 +26,7 @@
   --doorhanger-icon-opacity: 0.9;
 
   --main-color: rgba(12, 12, 13, 1);
-  --body-bg-color: rgba(237, 237, 240, 1);
+  --body-bg-color: rgba(212, 212, 215, 1);
   --progressBar-percent: 0%;
   --progressBar-end-offset: 0;
   --progressBar-color: rgba(10, 132, 255, 1);
@@ -37,7 +37,7 @@
   --toolbar-icon-bg-color: rgba(0, 0, 0, 1);
   --toolbar-icon-hover-bg-color: rgba(0, 0, 0, 1);
 
-  --sidebar-narrow-bg-color: rgba(237, 237, 240, 0.9);
+  --sidebar-narrow-bg-color: rgba(212, 212, 215, 0.9);
   --sidebar-toolbar-bg-color: rgba(245, 246, 247, 1);
   --toolbar-bg-color: rgba(249, 249, 250, 1);
   --toolbar-border-color: rgba(204, 204, 204, 1);
@@ -281,7 +281,7 @@ body {
   overflow: auto;
   position: absolute;
   width: 100%;
-  background-color: rgba(0, 0, 0, 0.1);
+  background-color: rgba(0, 0, 0, 0.05);
   box-shadow: inset calc(-1px * var(--dir-factor)) 0 0 rgba(0, 0, 0, 0.25);
 }