[MD History] Color tweaks.

chrome/browser/resources/md_downloads/vulcanized.html

Index: chrome/browser/resources/md_downloads/vulcanized.html
diff --git a/chrome/browser/resources/md_downloads/vulcanized.html b/chrome/browser/resources/md_downloads/vulcanized.html
index 50e3c7a3350ef0bb2f2019e09980505b12950c73..282db7096376910be4064907d03e79d4b131785f 100644
--- a/chrome/browser/resources/md_downloads/vulcanized.html
+++ b/chrome/browser/resources/md_downloads/vulcanized.html
@@ -34,7 +34,8 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 :root {
   /* This is a custom, Chrome-specific color that does not have a --paper or
    * --google equivalent. */
-  --md-background-color: rgb(241, 241, 241);
+  --md-background-color: #f1f1f1;
+  --md-loading-message-color: #6e6e6e;
   /* This is --google-blue-700, rewritten as a native custom property for speed.
    */
   --md-toolbar-color: rgb(51, 103, 214);
@@ -3028,7 +3029,7 @@ input[type='search']::-webkit-search-decoration, input[type='search']::-webkit-s
 }
 
 :host(:not([narrow]):not([showing-search])) #icon, :host(:not([narrow])) #prompt {
-  opacity: 0.6;
+  opacity: 0.7;
 }
 
 :host([narrow]:not([showing-search])) #searchTerm {
@@ -3296,7 +3297,8 @@ paper-item {
 :root {
   /* This is a custom, Chrome-specific color that does not have a --paper or
    * --google equivalent. */
-  --md-background-color: rgb(241, 241, 241);
+  --md-background-color: #f1f1f1;
+  --md-loading-message-color: #6e6e6e;
   /* This is --google-blue-700, rewritten as a native custom property for speed.
    */
   --md-toolbar-color: rgb(51, 103, 214);