I'm having some intermittent problems with the text changing colour on IE10 running on Win8 under VirtualBox 4.1.12 on my Ubuntu 12.04 Machine.
Is this a problem with VirtualBox or IE10? I'd be interested to find out the cause.
Try turning off hardware acceleration for IE10. Open Internet Explorer, go to Tools → Options → Advanced, and uncheck "Use software rendering instead of GPU rendering". Save and restart IE10.