merged from master

android/app/src/main/java/com/reactnativenavigation/params/parsers/StyleParamsParser.java

     public StyleParams parse() {
         StyleParams result = new StyleParams();
         if (params == null) {
+            result.titleBarDisabledButtonColor = getTitleBarDisabledButtonColor();
             return result;
         }
 
         }
     }
 
-    private int getInt(String selectedTopTabIndicatorHeight, int defaultSelectedTopTabIndicatorHeight) {
-        return params.containsKey(selectedTopTabIndicatorHeight) ?
-                (int) params.getDouble(selectedTopTabIndicatorHeight) :
-                defaultSelectedTopTabIndicatorHeight;
+    private int getInt(String key, int defaultValue) {
+        return params.containsKey(key) ? params.getInt(key) : defaultValue;
     }
 }

example/src/screens/FirstTabScreen.js

     Navigation.startSingleScreenApp({
       screen: {
         screen: 'example.FirstTabScreen'
+      },
+      drawer: {
+        left: {
+          screen: 'example.SideMenu'
+        }
       }
     });
   }

src/deprecated/platformSpecificDeprecated.android.js

         fab.expendedIcon = expendedIconUri.uri;
       }
     }
+    if (fab.backgroundColor) {
+      fab.backgroundColor = processColor(fab.backgroundColor);
+    }
 
     if (fab.actions) {
       _.forEach(fab.actions, (action) => {