Added better styles for play button

static/css/application.css

@@ -3948,7 +3948,12 @@ section.tool-wrapper div#controlls-container div.graph-controls input#playButton
   padding: 6px 18px 7px;
   text-shadow: 0 1px 0 #a30f0c;
   -webkit-background-clip: padding-box;
-  font: bold 14px "Open Sans", "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Geneva, Verdana, sans-serif; }
+  font: bold 14px "Open Sans", "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Geneva, Verdana, sans-serif;
+  color: #47221a;
+  text-shadow: 0 1px 0 #e04845;
+  -webkit-box-shadow: inset 0 1px 0 #e35d5b;
+  -moz-box-shadow: inset 0 1px 0 #e35d5b;
+  box-shadow: inset 0 1px 0 #e35d5b; }
 section.tool-wrapper div#controlls-container div.graph-controls input#playButton:hover {
   -webkit-box-shadow: inset 0 1px 0 0 #d84f4c;
   -moz-box-shadow: inset 0 1px 0 0 #d84f4c;

templates/sass/courseware/_amplifier.scss

@@ -138,6 +138,9 @@ section.tool-wrapper {
         display: block;
         @include button(simple, #dc322f);
         font: bold 14px $body-font-family;
+        color: #47221a;
+        text-shadow: 0 1px 0 lighten(#dc322f, 5%);
+        @include box-shadow(inset 0 1px 0 lighten(#dc322f, 10%));
 
         &:active {
           @include box-shadow(none);