Today I've altered my Css styles the PRE elements that are used to display code snippets on both my regex blog and my asp blog. The new style definition is:

PRE.CodeSnippet
{
    background-color: #f0f0f0;
    padding  : 1em;
    margin  : 0px 2em;
    padding  : 1em;
    border  : 1px dotted gray;
    font-family : "Lucida Console";
    font-size : 1em ;
    color  : #000000;
}

A good example of that can be seen here:
    http://blogs.regexadvice.com/dneimke/archive/2004/01/23/379.aspx

All code in my blogs in marked-up using my MarkUp tool. The code (and .exe) for this tool can be downloaded from its new WorkSpace on GotDotNet:
    http://workspaces.gotdotnet.com/markup

Currently the tool has language definitions for the following languages:

• Javascript
• C#
• VB.NET
• TSQL

...and can emit marked-up code in either FONT or SPAN elements - the SPAN elements use Css classes whereas the FONT elements use in-line color attributes. I'm using the SPAN format because it gives me central control over the coloring and styling of my samples.