Afterburner Theme readability issues

Upgraded to Moodle 2.3.1 and tested the new file-picker which is fantastic.

However, our site uses the excellent Afterburner theme which has a blue used by the file-picker and makes the black text illegible.

I edited the afterburner_styles.css files and replaced the offending blue colour (#34637f - as found by the eye dropper tool in Photoshop) with grey (#808080).

<!-- Extract from afterburner_styles.css

select, input, button {
background-color: #808080;
color: #fff;

This changed the global blue buttons to grey as expected and also changed the background colour in the file-picker dropdown box and buttons to grey.

There is still a readability issue that would be addressed if the text of those items could be changed to white.