Macbook Color Profile Question

I just bought a Macbook from my cousin yesterday. It's in great shape and not very old, which is why I bought it. It's amazing how addictive it is, I've been PC person forever.

I immediately brought it home and installed all my programs, set a desktop photo, and opened photoshop. The coloring on my photos is off. I've tried using Supercal, and calibrating using the tool in the profiles, but I can't figure this out for anything. Being new to MAC, I'm just confused---

I use Firefox for my browser. The colors are perfect in it. When I change my profile and get it to somewhat make my photos look right (or like they did in my PC. All the photos seem to have like an orangey-yellowish look to them, not majorly, but editing photos isn't going to work with it like that.), then I open Firefox and my coloring is completely off on websites.

Does anyone have any suggestions? I would greatly appreciate it.


Thanks in advance!