Best Answer - Chosen by Voters It depends on which browser you are using. If you're using Google Chrome, in the settings icon, click tools &gt; extensions and where it says something about your Tumblr dashboard theme, click 'uninstall' Other Answers (4) i'm not sure if this works on other internet things but i use google chrome, and to uninstall the themes on your dash, click the spanner in the top right corner of the screen. select tools, and click extensions. it should come up with the extensions you have installed for your dash? and then select uninstall and your dash should return to normal - i just did it :) if ur using google chrome as ur webbrowser go into ur history, (CTRL+H) AND press clear all history and it will reset ur internet settings back to normal, install google chrome and do that its easier and plus google chrome is a much faster and better web browser :D hope it fixes