I have tried ctrl A followed by ctrl spacebar.

What color text on yellow background. All I find on internet is info of High contrast from Desktop Display personalize that doesnt do what I am trying to do. The text seems to vibrate which causes eye strain. Use the below to pick colors for background and text font.

Yellow background behind text. White text is the best choice. If you want to use yellow text try a dark gray or dark blue background.

In a outdoor situation yellow stands out from its background giving a clear message. I have tried ctrl q also. Yellow text is a good choice.

How do I get a white sreen background with black text. For example yellow on green or purple on green. Yellow amber text on a deep blue background has excellent readability as does amber or green on black.

Orange text is a bad choice. Using yellow also makes in easy to use orange red and green which all work great together in a signage system. Again though maintain contrast.

Too many bright colors. Changing the background color of a table. You can read about that in any old World Book.