Color correction?

always shoot to get the best image you possibly can in camera.  Color correction is to fix small details.  But, it can be used to drastically change the image to get a certain look as well.  With higher end professional cameras, you have way more control over your image, but with consumer cameras, you can't do much at all as far as image settings go.

yeah like for example i can mess with the white balance to get a warmer tone or something like that.  but i can also do the same in post.  i just dont know if its better and more consistant overall to shoot what you want the picture to look like, or if its better to try and get that in post.  because i usually shoot to get the most accurate to real life shots i can then change it around to how i like it in cc. but i dont know if thats the best way.

white ballance is a must while filming but if post production I like to use the HVS adjust in fcp

Do the best you can on your camera. The problem with color correcting in post is it may become a little grainy.

get the right exposure, white balance, turn down the sharpness, bump wb shift to warm, maybe add a little saturation, and then color correct.

MAGIC!

I have a decent amount of color correction experience.  I would shoot for the best possible image.  If you choose to warm up your image through white balancing, it's hard to quantitatively control the amount and reproduce across changing light conditions.  If any mistake is excusable, its underexposing.  The shadow area contains more detail that can be brought out in color correction than the highlights.  As a matter of fact, some pros will always slightly underexpose to ensure they have highlight detail.  But if you do that, you are forcing yourself to do cc in post.  HOWEVER, the opposite is true with using film--highlights have more details than shadows.

If youre shooting anything lower quality then DVCRPRO50 or Digi Beta, you're better off with having the best shot in camera. If you're shooting anything above these two the choice is yours, get the in-camera effect, or shoot flat and have all the latitude to color correct. Color correction is almost mandatory if you're shooting hidef or film. Look at film rushes, they're often bland, but once they go through CC, the magic happens.

BULLETS!