how do you change the web page from a purple page to a white page

Hi The purple pages are where you have opened a tab in [https://support.mozilla.org/en-US/kb/private-browsing-firefox-android Private Browsing]. If, when you open a new tab, you select '''New Tab''' instead of '''New Private Tab''' it will open as a white page. I hope this helps, but if not, please come back here and we can look into a different solution for you.