I absolutely loved the 3D / gradient look and feel of Bootstrap 2.3.2 and thought it lent a very easy elegance to plain web pages. Some people complained that it made everything look the same, but I remember the default look of the web in the 1990s and having something like Bootstrap 2.3.2 as a default look and feel of a browser would have been amazing.
BTW, if someone could point me to a look and feel for the very latest Bootstrap which is as close as possible to the 3D / gradient look and feel of Bootstrap 2.3.2, I would be forever grateful!