Visual Editor Background

I have a WordPress site in which the background colour is black and the text is white. The site is fine, but it’s a real pain trying to edit content in the visual editor as the background is white and it is the same colour as the text.

so, How do I change the background colour of the visual editor to black or any other colour so that the content can be automatically readable if the text colour is to be white, because my normal page shows the dark colour in the background, but when I am doing a post, it is coming to be very painful that I don’t need to change it every time …

see image: enter image description here