Specs are quantitative aspects of the option such as the price
Pros
Pro
There are versions for a lot of applications or it's easy to make your own
There are ready-made packages for Vim, IntelliJ, Emacs, iTerm, Eclipse, etc. If your app isn't supported the website explains clearly what colors are used, so it should be easy to wrap up your own.
Different colors within the same color scheme to quickly distinguish the layout (px, %, ..) and other declaration blocks from the colors (background-color; color); that eases the visual processing, thus increases reading speed, while reading CSS.