This will enable you to change the default white background of the different editors to match your skin. Standard Editor
Login to the Admin CP
Click on the Look & Feel Tab
Click on the Skin name
Click on CSS
Click on ipb_editor.css
Find this code:
#ipboard_body .input_rte { width: 100%; height: 250px;}
Change the code to (replacing the colours with the hex value of your choice):
#ipboard_body .input_rte { background-color: #000; color: #fff; width: 100%; height: 250px;}
Rich Text Editor
Open the folder publicjs
Open the file ips.editor.js (save a copy in case you make a mistake)
Find the following (line 1100 if not changed)
ips_frame_html += " background: #FFFFFF;n";
Add this underneath:
ips_frame_html += " color: #fff;n";
Your code should look like this (replacing the colours with the hex value of your choice):
ips_frame_html += " background: #000;n"; ips_frame_html += " color: #fff;n";
Save the file.
You will need to hard refresh (Ctrl + F5) on Windows.