JavaScript widget buttons tweaks

I like how you guys have placed the logos inside more button-like UI in the javascript widget, but I think that the lines are a bit dark right now and they fight heavily with the logos. I'd love to see if they can go ~50% lighter and maybe change to the darker color only upon rollover.

I do think that it's a nice addition though--it's certainly more clickable now.

Cheers,
SML