Dear Microsoft, Visual Studio is a great tool used by many developers worldwide. The changes you have made to its user interface in Visual Studio 2012 have disappointed many of these developers and made their lives a lot harder. Colors allows different items to be easier to distinguish. The new icons used in the solution explorer, as antithetical as you might think it is will make files harder to spot, the developer therefore wasting more of his precious time. In comparison to Visual Studio 2010, the new Light themes makes the whole experience tiring, the new fonts take a lot more space (which is bad for those that are forced to work on laptops with a lower resolution from time to time). The Dark theme would be pleasant if it wouldn't change the editor's background as well. In Visual Studio 2010, the panels were easier to tell apart from the dark background, due to contrast, while in Visual Studio 2012, everything seems to be chaotically arranged on the same plain white form. Developers are not regular users. We need tools, not aesthetics. We would buy Visual Studio no matter how ugly it would be as long as it is practical. The changes in the new Visual Studio are disappointing. It is sad to see what has become of what used to be probably the best IDE on the market, and we would like Microsoft to revert Visual Studio 2012's interface to the one used in Visual Studio 2010. We will continue to use it because we have to, but we will not like it, and the loyalty of developers is something you should be concerned of.