(You can't add or remove items while in incognito or guest mode)
Right click the chrome icon and select "New Window"
Copy this link and paste it in your New Chrome Window and download the high contrast extension: https://chrome.google.com/webstore/detail/high-contrast/djcfdncoelnlbldjfhinnjlhdjlikmph?hl=en
Go to Chrome Settings and choose Extensions: chrome://extensions/
Locate the High Contrast extension and choose Details:
Turn on the option to Allow in incognito:
