Bug 1073066 - Use consistent grey tone in reader mode (r=margaret)

mobile/android/themes/core/aboutReader.css

@@ -333,7 +333,7 @@ body {
   margin: 0;
   padding: 0;
   list-style: none;
-  background-color: #ced7de;
+  background-color: #EBEBF0;
   -moz-user-select: none;
 }
 
@@ -381,7 +381,7 @@ body {
   left: 0px;
   z-index: 1000;
   float: left;
-  background: #dde2e7;
+  background: #EBEBF0;
   margin-top: 12px;
   margin-bottom: 10px;
   padding-top: 4px;
@@ -396,7 +396,7 @@ body {
   width: 100%;
   height: 0px;
   border: 0px;
-  border-top: 1px solid #C5D0DA;
+  border-top: 1px solid #B5B5B5;
   margin: 0;
 }
 
@@ -440,7 +440,7 @@ body {
 }
 
 .segmented-button > li {
-  border-left: 1px solid #C5D0DA;
+  border-left: 1px solid #B5B5B5;
 }
 
 .segmented-button > li:first-child {