Changes color scheme of alt keys.

ui/keyboard/resources/elements/kb-altkey.html

Index: ui/keyboard/resources/elements/kb-altkey.html
diff --git a/ui/keyboard/resources/elements/kb-altkey.html b/ui/keyboard/resources/elements/kb-altkey.html
index 34ff0fee8acafd1133610db33fb5ee688783cd9b..1d4cc4ed69e15d95947afaa0c24244bed424cafa 100644
--- a/ui/keyboard/resources/elements/kb-altkey.html
+++ b/ui/keyboard/resources/elements/kb-altkey.html
@@ -18,7 +18,7 @@
       }
 
       :host(.active) {
-        background-color: #afafaf;
+        background-color: #dddddd
       }
 
       :host(:first-child) {
@@ -26,6 +26,10 @@
         border-bottom-left-radius: 2px;
       }
 
+      :host(:not(:first-child)) .key{
+        border-left: solid 2px #dddddd;
+      }
+
       :host(:last-child) {
         border-top-right-radius: 2px;
         border-bottom-right-radius: 2px;
@@ -33,7 +37,7 @@
 
       :host .key {
         bottom: 0;
-        color: #ffffff;
+        color: #666666;
         font-family: roboto-bold;
         font-weight: 100;
         height: 1.2em;