Is it something I've done?
Something I've said?
Is what my Dad told me about eyesight correct after all?

the colours of the board have changed on my screen: instead of the old two tones of grey, I now have a light, creamy beige and a soft, sagey green.

Quite pleasant, in fact, but I would have liked some warning, if it is a global change, or else I want to know how you select the background colours, if there is a way.