If you frequently use the command line, it's probably not for you. Think of this as similar to the Atom text editor. With html/css/js, you can create your own packages and themes or download one from the community.
I'm a simple man and like pretty, shiny things, like occasionally activating power mode, or playing the John Cena theme when you open a new tab. Stupid shit like this keeps my morale up.
Does it automatically recognize divisions printed by programs running in the terminal and use that to determine what text to select? (i.e. if I do a vertical split in vim, does it restrict text selection to one side or the other of the split?