@marianojmiguel, unminifying = magic. hehe :)

The CSS is still accessible in a number of ways, including in a link on the Appearance → Custom Design → CSS page in the "Mode: Add-on" section. You can find it by clicking "Edit" next to "Mode: Add-on" in the Publish box.

However, it's often better (and easier) to find CSS using built in browser tools. Most modern browsers have a web inspector that you can access by right-clicking an element and selecting the "Inspect Element" option. In Chrome, it will show you the HTML for what you clicked on as well as all of the CSS that applies to it, including the order of the rules that apply and which ones are overridden by other rules. I help people with CSS all the time, and I find the browser tools indispensable.

Ideally, you should use your browser's built in web inspector tools to see all of the CSS that applies to any element on your pages by right-clicking the item and selecting the "Inspect Element" option.

You can also find links to any web page's CSS files in the head section of the HTML if you view page source in your browser.

The original stylesheet link is also still available by clicking "Edit" next to "Mode" inside the Publish module on the Appearance → Custom Design → CSS page. However, note that you should not copy and paste the entire CSS stylesheet into your CSS editor unless you are an expert with CSS.

Note that it's usually better to use modern web browser's built in web inspector tools to view CSS rather than looking at the theme stylesheet. Also, many users were copying and pasting the entire original stylesheet into the CSS editor which is usually not ideal and in most cases makes working with and troubleshooting CSS harder for beginner users. That said, you still may want to view the stylesheet directly if you are an advanced CSS user, and you can do that by clicking the "Edit" link under "Mode: Add-on" in the Publish module.

I am using the triton lite upgraded theme.

Thank you

A link to each theme's main CSS file ought to be found on the Appearance → Custom Design → CSS page. Look for the "View the original stylesheet" link.

The Custom CSS screen will not show you the original CSS of the theme. If you'd like to see tho original theme CSS, you should look for it from the site source.

For example, for your theme (ThemeMin) it's located here: http://s2.wp.com/wp-content/themes/premium/thememin/style.css?m=1337717206g

Also note, that when editing the Custom CSS, you can have it not load the original CSS of the theme by changing the Mode to "Replace" instead of "Add-on" in the Publish box of the CSS screen.

Hope that helps!

The URL that timethief posted does work - you just have to add in the name of your theme into the URL but it'd be great to have the link back on the CCS editor page.

There used to be a link in the CCS editor that displayed the CCS style sheet for the template (I'm using Sight and Academia). That link seems to have disappeared with the recent new design.

Others are also having the same problem and it hasn't been resolved. http://en.forums.wordpress.com/topic/view-your-css-stylesheet-missing?replies=6

I've managed to figure out that you can see the stylesheets by using the URL below and inserting the name of your template but it'd be great to have the link to these sheets on the CCS editor page as it's an extremely useful reference.
https://wpcom-themes.svn.automattic.com/TEMPLATE NAME HERE/style.css

The sites I have are: http://www.urbanbandit.wordpress.com and http://www.zerowastecanada.wordpress.com