Yes you can and should use a white balance card when shooting, keeping in mind that HD requires higher lighting (lower ISO) than most digital still cameras due to the nature of the CCD (CMOS, usually a lot smaller size versus near- or full-frame sensors found in DSLRs). To answer your question, Final Cut Pro and FCE both have filters to correct gamma, white balance, and contrast (luminance) with some pretty intuitive yet sophisticated plug-ins. Also, Color is an app that can be used for batch processing of files when working on large projects.