Add color query types

| Q                     | A
| --------------------- | -----
| Bug report?           | no
| Feature request?      | yes
| BC Break report?      | no
| RFC?                  | no

> There's also the "color" type, ie. https://dpb587.me/blog/2014/04/24/color-searching-with-elasticsearch.html

Maybe we could generalize this in some way together with #195?