An area that is often missed is that of camera profiles.
Building a custom colour profile for your camera is relatively easy with tools such as the X Rite ColorChecker, but today Adobe tend to build very good camera profiles into their products. If your a studio worker then photographing a grey card at the start of your session and getting your white balance correct, plus using the built in profile in Photoshop or Lightroom will get you accurate colours.
Which do you prefer?
