Menu bar in 16-bit color

I am running Windows Server 2008 as a terminal server, where LibreOffice is installed. When launching LibreOffice, the menu bar looks all messed up with some black artifacting. I’ve noticed this an issue with 16-bit color, because I have changed to 32-bit and the problem is no longer present. However since I am running in a terminal services environment, 32-bit color consumes additional bandwidth. Is there a workaround?

Since it requires 3 karma to upload an image, here’s a link to a screenshot of the problem:

Thanks in advance!