Search bar changes background colour, but not foreground

Binary package hint: rhythmbox

The search bar to narrow down the displayed songs changes its background colour away from the GTK theme's when something is entered (in my case it becomes light yellow, I don't know if this colour is universal or not). The text colour in the box, however, stays the same as before (in my case white). This can end up with unreadable text whenever something is typed into the bar.

Steps to reproduce:
1) Use a light-on-dark GTK theme (I use a custom coloured Clearlooks 1)
2) Open Rhythmbox
3) Type something into the search bar and the text is not readable

I know this is more of a nag, but little things like this can influence one's feeling of a desktop (having to explain what that big yellow bar was when using a laptop with Rhythmbox at a party for example)