its derived from Controls.Button.Default
let me know if you need an override
I have changed the bg and fg in Controls.Button.Default and I see no change in the Find button. Just to be certain we're talking about the same thing, here is a screen shot:

I'm trying to get the Find button to look like the Podcast count button.
Not truly knowing what I'm doing with skin modifications, would an override be the answer?
Somewhat related - hiccup mentioned to me that he couldn't see a Find button for the LE and wondered if it was user-enabled. Neither he nor I are able to see where it might be an option to enable/disable it. And in 2.5, once the Library Explorer is enabled, I have to double-click the LE header to get the search field and Find button to show. In 3.0 it shows as soon as it is enabled. This is all taking place in the left panel.