http://sites.google.com/site/chromiu...-theme-manager

After creating a theme, you can have the option of distributing the themes in ctmz format for users of CT Theme Manger;

From the site;

A ctmz theme package is a zip file containing three files; default.dll, details.txt, and thumbnail.png

default.dll - This is the resource file containing the theme, there are many methods to creating them, we suggest the method we describe our tutorial Creating a Custom Theme

details.txt - This is a text file containing information about your theme, it has a very precise ordering as follows:
#name
<name of the theme>
#creator
<your name>
#website
<your website url>
#copyright
<your copyright message>
#notes
<additional notes, keep to one line, limit to 150 characters>
#builder
<software used to build the theme, can be left blank>

Replace all the entires surrounded by < > with the information for your theme.

thumbnail.png - The thumbnail for your theme, size is 200 pixels wide by 150 pixels tall.

Once you have placed these three files into a zip, change the file extension to ctmz and you now have a compatible theme package.

Now this is a bad idea.
CTMZ includes only one version default.dll
And versions of chrome/chromium very much.
This will work only on version, which was created default.dll

the ctmz is actually a zip file consisting of a theme.dll, a text file and an image file (png)
the pro is the installation of the theme is much easier :-) and in addition a preview is available



as for your Toons themes, you could perhaps name them as ToonsDev; ToonsChromium, etc with the respective theme.dll; the text file and image file would be the same

EDIT
I have tested only with Dev Chrome; may not work with Chromium

Is this a preview from Google or something a 3. part has made ?

previously users use CTC for installing themes and creators use it for creating themes;
the problem is that themes cannot be preview anymore and while surfing, came across this CT Theme Manager; at least users get a small preview before installing new themes

I don't really see the point in packaging a file like that because not much people use the theme manager.. and even if they do, they have to change the theme list every time there's a new update.

Might as well manually copy them, no?