Stylish on Firefox or Chrome
Click the “Stylish” button on your browser, and then select “Manage Styles” from the drop-down list if you are using Firefox or “Manage Installed Styles” if you are using Google Chrome. Scroll through the list of styles and locate the customized theme that is applied to your Tumblr dashboard. Click the “Disable” button to stop using the customized Tumblr dashboard theme, or click “Remove” to remove the theme completely.
Nice Tumblr on Chrome
Sign in to your Tumblr account and access the dashboard. Click the “Nice Tumblr” link displayed on the dashboard next to the Search Tumblr box. Click the first thumbnail to remove any themes and revert to the default Tumblr background. Click “Dashboard” to return to your Tumblr dashboard. Writer Bio
