"When I changed my background in my browser to white I could no longer see editing keys at the top of the screen"

With the Awesome Screenshot Firefox extension, if the background color of Firefox is set to white, this problem will appear. Please follow the steps below to solve this problem:

1. In Firefox, click the three horizontal lines in the upper-right corner.
2. Click Settings.

3. Scroll down and find "Override colors". 

   

4. Set "Override colors" to "Automatic (use system settings) " or "Off".

   

   If you still choose Custom for "Override colors", do not choose white in "Manage Colors..." > Background.