Comment 113 for bug 209509

No, ic3b3rg, the fix is far from obvious - and certainly not that obvious. Text inputs have a white background by default, so dark text shows up in them. White text on #myfile would make all other text input invisible. That leaves us needing to provide white text for input[type='file'], but dark text for all other browsers and previous versions of FF - far more complicated than you seem to think, and who knew that there was going to be a need to cater for this? In a nutshell, the new input[type='file'] is writing outside the box so this particular input type on (recent versions only of...!) this particular browser would need to be a different color to all other inputs. The best fix is not to change font color at all; instead, put a background-color on all inputs, including the file uploads:

input {background-color: #FFF}

This puts a white background behind the text of all inputs, including FF22/23. Do you want to tell the rest of the world they need to do that, on future sites and existing ones, or is it perhaps best to make #FFF the default background for future releases of FF input[type='file'] ?