I am in the process of putting up a WordPress theme to the Theme Directory.  At the top of the parent style.css, WordPress requires something like this:

/*
 Theme Name:   Twenty Fourteen Child
 Theme URI:    http://example.com/twenty-fourteen-child/
 Description:  Twenty Fourteen Child Theme
 Author:       John Doe
 Author URI:   http://example.com
 Template:     twentyfourteen
 Version:      1.0.0
 Tags:         light, dark, two-columns, right-sidebar, responsive-layout, accessibility-ready
 Text Domain:  twenty-fourteen-child
*/

Looking in every corner of the internet, I found nothing that explained where those values under “Tags” came from.  It occurred to me that some of them looked like the filters under WordPress’ “Add Themes” screen.  Scanning the source, I was able to extract what looked like some of the values in the example.  Here is what I think you can use in the “Tags” field, grouped by what WordPress does:

 

– Colors –

  • black
  • blue
  • brown
  • gray
  • green
  • orange
  • pink
  • purple
  • red
  • silver
  • tan
  • white
  • yellow
  • dark
  • light

 

– Layout –

  • fixed-layout
  • fluid-layout
  • responsive-layout
  • one-column
  • two-columns
  • three-columns
  • four-columns
  • left-sidebar
  • right-sidebar

 

– Features –

  • accessibility-ready
  • blavatar
  • buddypress
  • custom-background
  • custom-colors
  • custom-header
  • custom-menu
  • editor-style
  • featured-image-header
  • featured-images
  • flexible-header
  • front-page-post-form
  • full-width-template
  • microformats
  • post-formats
  • rtl-language-support
  • sticky-post
  • theme-options
  • threaded-comments
  • translation-ready

 

– Subject –

  • holiday
  • photoblogging
  • seasonal