change selected item color in ionic listview
<p>Hi i am new to ionic framework and css. I have a listview with some items. I want to change selected item list color. 
This is my code</p>

<pre><code>&lt;ion-list show-delete="shouldShowDelete" can-swipe="true"&gt;
  &lt;ion-item ng-repeat="wishlist in wishListItems" class="item-thumbnail-left"&gt;
    &lt;img src='data:image/png;base64,{{wishlist.wishlistItemImage}}'/&gt;

    &lt;h2&gt;{{wishlist.wishlistItemName}}&lt;/h2&gt;
    &lt;ion-option-button class="button-assertive icon ion-trash-a" ng-click="deleteWishlistItem(wishlist.wishlistId)"&gt;
    &lt;/ion-option-button&gt;


  &lt;/ion-item&gt;
&lt;/ion-list&gt;
</code></pre>

<p>And i want to know index of selected item. 
Please help me how to do this.</p>