I like that it's colorful, even if the colors are kind of hamhanded; it's good for your office to have an identity. I wish we could paint our offices (we could, but we need to be able to trade up to bigger offices on very little notice).
Me too. The last office I was in was all grey and white. I would prefer lots of colours even if they are all mismatched. It's better than looking like a prison.
Have you taken a look at how much it would cost to repaint your office beige when you needed to? It could be worth it in the productivity gain department to paint your offices interesting colors and then contract out when you need the bigger space. Though don't skimp on the chairs to paint the office.