[MD History] Color tweaks.

chrome/browser/resources/md_history/lazy_load.vulcanized.html

Index: chrome/browser/resources/md_history/lazy_load.vulcanized.html
diff --git a/chrome/browser/resources/md_history/lazy_load.vulcanized.html b/chrome/browser/resources/md_history/lazy_load.vulcanized.html
index 9c958e047d957645a5d48fa6e9d668eaa6a481b2..f4452dec0e56aa82789c36a4065f2467c595df48 100644
--- a/chrome/browser/resources/md_history/lazy_load.vulcanized.html
+++ b/chrome/browser/resources/md_history/lazy_load.vulcanized.html
@@ -66,7 +66,7 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 
 .centered-message {
   align-items: center;
-        color: #b4b4b4;
+        color: var(--md-loading-message-color);
         display: flex;
         flex: 1;
         font-size: 14px;
@@ -148,7 +148,7 @@ button.more-vert-button div {
 }
 
 .domain-count {
-  color: rgb(151, 156, 160);
+  color: var(--secondary-text-color);
         padding-left: 10px;
 }
 
@@ -617,7 +617,7 @@ paper-ripple {
 
 .centered-message {
   align-items: center;
-        color: #b4b4b4;
+        color: var(--md-loading-message-color);
         display: flex;
         flex: 1;
         font-size: 14px;
@@ -804,7 +804,7 @@ button.more-vert-button div {
 
 .centered-message {
   align-items: center;
-        color: #b4b4b4;
+        color: var(--md-loading-message-color);
         display: flex;
         flex: 1;
         font-size: 14px;
@@ -966,7 +966,7 @@ paper-spinner {
 }
 
 #sign-in-promo-desc {
-  color: #848484;
+  color: var(--secondary-text-color);
         font-size: 123%;
         margin-top: 10px;
 }