Find a Pages file, select it and Get Info.
In the resulting box, in the section marked Open With, choose Pages (if it is available) or choose Other and browse to your applications folder and find Pages.
Once done, hit the Change All button and that problem should then go away.
Not sure about the color.
Try running Windows in window mode only and not in Coherence.
Does this problem, the colors, happen when Parallels is not running?
I'm using a new MacBookPro with Snow Leopard. After installing Parallels and Windows 7, the system started behaving weirdly (blue highlights show up randomly in Pages and Safari; all Page files became Microsoft files; every time I save a Pages file, system will only save it as a MS file, etc.) I've run Kaspersky to check for a virus. What do you advise doing when multiple problems appear unexpectedly? I could just post each problem separately. Should I? Or is something global going on?