SkinSoft VisualStyler.Net 

This program allows application developers to make exciting interface skins for their Windows forms using the .Net Frame technology.

Easy to understand and to master, it supplies all the tools you will need to change that boring color scheme to anything you can imagine. The software comes with preloaded content that makes it easier to skin any application; you just have to follow step by step the list of components in the left of the display, play along with it to understand how it works and that’s it. You’ll be on the process of getting some good looking interfaces.

The files are saved as .vssf (visual styler files) so you can load into the application you’re working on to make it new and totally custom-made.

Choosing one of the preloaded content or starting from scratch, you can achieve your interfaces look like Mac OS X in their different versions from Panther to Tiger, or in the case of Windows, from XP to Windows 7 Aero.

You can also edit the graphic elements of the interface in any photo editor software, i.e Windows Paint, or take the images as a template to create your own. Then, you can simply load each image to the right place. You can also make transparent elements or backgrounds to design floating elements by simply defining a color which will be detected as transparent.