Is there any way to use theme CSS from screen.css inside of CKEditor ?

[zencoder]

There can not be an automatic way, because

I see... but, as I know editining page it is an ordinary HTML page. This page created "on the fly" when I start editing from GS. Is it possible to "insert" into it one more style sheet? It may be placed on a fixed folder (thomething like ThemeStyle). Before I begin any work with site, I just copy to this folder content of themes files (screen.css, images folders, etc). So when editing page will created it will be use pre-prepared styles from this folder. The only problem is the name of css file

* the CSS file name differs between themes (in your theme it seems to be screen.css, but in others it's styles.css or default.css)

but it much more easy create template with fixed css file name (like screen.css) or simply edit existing desing replace somekind of styles.css with fixed screen.css. But editor ALWAYS will show WYSISWYG! The only dificult - applaying custom styles to the text. But it can be entered in pure HTML-mode.

you could have multiple themes installed, but only one can be used in the editor

this can be solved by providing combo box (like in selecting design) in page for editing form.