Yesterday, Siegfried put finishing touches on the import/export of color schemes in SharpDevelop. To give you an idea, let's take a look at the following screenshot:

This is an imported color scheme from StudioStyl.es, more specifically http://studiostyl.es/schemes/son-of-obsidian-with-resharper.
Now, how do you get one of those color schemes installed in SharpDevelop? You have to go to the Tools / Options dialog, Text Editor / Highlighting section:

There you will find the "Import highlighting colors" button, that allows you to pick a highlighting definition - either one that was exported from SharpDevelop, or one that came from Visual Studio (as is the case with StudioStyl.es):

Please do note that if you have existing customizations, the import will warn you that those will be reset (otherwise you might end up with very interesting intersections of color schemes).
Speaking of interesting effects: if you compare the first screenshot with the first listing on the StudioStyl.es page, you will notice differences such as the type coloring or the constructor (eg line 15). The reason for this is that sometimes VS supports more options, other times it is SharpDevelop - thus there can't be a perfect mapping when you import from a VS settings file. You might need to make slight adjustments in SharpDevelop after the import to get a perfect look.