Iconsets:
Classic
More Classic
Lachlan Coles Iconset

Instalation:

To install a theme open the theme with Burn.

To install an iconset:

Right click the Burn application.

Choose "Show Package Contents".

Open Contents >> Resources.

Replace "Burn.icns" in this folder.

Open your localization folder: like "English.lproj".

Replace "Burn document.icns" (when used by localization), "Copy document.icns" and "Theme document.icns" in this folder.

Made a great theme or iconset. Feel free to sent it by e-mail to us so it can be added to the site:
support@kiwifruitware.org