Custom Fields

I’d also like to know if it’s possible to use images instead of words in the Key value.

The unordered list (<ul>) for the custom key:value output is given the css class ‘post-meta’, so you can do this in your stylesheet:

.post-meta {
list-style-type: none;
}

And yes, you can use an image for a key or value (that is, with the HTML <img> tag).

This is the css class declaration for ‘post-meta’ taken from the classic theme:

ul.post-meta {
/* classes used by the_meta() */
list-style:none;
}