I was just wondering?

I was just wondering about something. I bought a new tv a week ago. It's a Sony FD Trinitron Vega (KV-32HS420). I just noticed that whenever there's a white or yellowish background, it looks a bit purplish on the side. I also notice that when I turn off the tv. You know how you turn it off and if you look close enough you see a majority of the screen is gray. I realized that the left side of what's supposed to be gray is darker than normal but at night time it goes from the left side to the top. Should I be concerned about that. But it's not as bad and it doesn't do it on all the colors. I was just wondering if anyone has this same problem with theirs and if so, should I fix it, and if so how?

Also I don't know if it's also the stuff I hooked up to it causes a problem as well. I have hooked up to it a JVC vcr (HR-VP653U). A Cyberhome DVD Player (CH-DVD 300). And a Sony Playstation 2. Could one, two, or all of these cause a problem and if so how do I fix it. Also could sunlight and a light from a fan cause problems for a television?