Base16 Builder is a nimble command-line tool that generates themes for your favourite programs. See it in action below
Base16 Builder is simple to use. All you have to do is supply a color _s_cheme, template, and brightness. Base!6 Builder will use this information to generate a theme and write it to stdout. Because Base16 Builder writes to stdout it is possible to "pipe" the theme anywhere. In the above screencast I pipe it to a file called theme but this could just as well have been a configuration file like .Xresources.