Using Firefox 137.0 (64 bit) Win 11 24H2 I have just noticed that the background colour of the sidebar and the customise firefox is a pinkish red. I much prefer them to be white. I cannot see or find a way to change the pinkish red to white nor why this colour has been chosen. I do have a theme which includes various tones of red. Not sure if this is relevant but if it is, it seems to defeat the concept of having a theme, which I regard as a header that should not affect the body of the page). Thanks in advance for the help.