How to change tinyMCE background and font color?

Today I've noticed that many of merchats have got problems with own tinyMCE editor (descriptions editor) in PrestaShop back office. The problem occur when they use black backgrounds and white fonts in front-end templates. Then description box looks like "empty" - because fon't color is white, and background is white too.

How the description box looks like with white background and white font color

Only when you press ctrl+A you will se the content

How to change background and font color?

As I said this issue appear only when we use dark backgrounds in our template (front office) and when we use white font color. It's because tinyMCE uses our template .css styles. So we have to modify it. Bye default all styles are located in the global.css file located in your theme directory: themes/YOUR_THEME/css/global.css. So we have to change something in this file. Please open it.

We have to add new css styles to define the color and background for our tinyMCE description boxes. For example, we have template that use #333333 color as a background, and #FFFFFF color as a font color. We have to change tinyMCE editor background color to #333333 and tinyMCE editor font-color to #FFFFFF. To achieve this You have to add this code at the end of the file:

div.rte, .mceContentBody {
background:none repeat scroll 0 0 #333333!important;
color:#FFF!important;
text-align:left;
} 

Explanation of code

background:none repeat scroll 0 0 #333333!important;

This line changing the backgrund color to #333333, make sure that you use !important after color definition

color:#FFF!important;

This line changing the font-color to #FFFFFF, make sure that you use !important after color definition

final effect - editor with dark background and white font