[Casmos]

Yes,, it worked. I use only this part. Because all I needed was the WYSIWYG Background color changed thank you very much.

Put in additional.css

/*WYSIWYG Background */

body.wysiwyg {
background-color: #2c2c2c; 
}

Originally Posted by Cadellin

I found a solution to this in the end.

.wysiwyg, .formcontrols .blockrow .editor_textbox textarea:focus, .editor_textbox textarea, .editor_textbox iframe, body.wysiwyg {
color: #fff; /*Default Font Color */
background-color: #2c2c2c; /*WYSIWYG Background */
}