Ah, it looks like all the white bits are black for you, except "options". Here's what it looks like for me, perhaps the various buttons are still clickable?
It's very odd that its showing strangely for you. Do you have some user styles that could be overriding the styles? The game is really just some HTML, so its styling may be overridden by other styling. The white text everywhere is coloured by the same style though, so it's very odd that "options" still displays correctly. Have you tried Inspecting the various elements to see whether they exist, and if they do, where the black colour is coming from?