My television picture has a bluish hue to it. We have satellite tv. The main box is in my father’s room. I have a second line to my room. My father’s picture is fine. But mine has a slight bluish hue to all of it. Does anyone know what could be the cause of this or how to correct it?
Thank you in advance to all who reply 
Your remote, or the TV, should have a menu on it that allows you to adjust the color. If it’s a really old TV (circa 15th or 16th century} it will have some color adjust knobs on the back somewhere.
A bluish tint is tough, if not impossible, to adjust away with normal user controls. “Tint” controls the green/purple color shift, and “Color” adjusts the amount of color, from black and white to overly-strong.
You’d need to find your way into the service menu to adjust the color balance, and without a grayscale test signal, it’s challenging, even if you can get at the service controls.
One possibility, some newer or fancier sets have a “color temperature” setting - if yours has such a setting, try messing with that. A setting of something like 9300k would make for a bluish picture, 5000 is probably closer to neutral and 3200 will be almost on the tan side.
If it’s a CRT, try moving the TV as there may be something generating an electromagnetic field. What’s on the other side of the wall? The fridge?