My TV has a blue and yellow hugh on everything. I believe they call it ghosting. Is there any way I can fix this without having to replace my TV? I have a Panasonc Model number PT-47wx42f.

Ghosting is not a color issue. Ghosting is actually trailing effects that are left when something moves quickly across a slower TV (usually older model LCDs).

A blue and yellow hue could just be color settings. Have you tried adjusting through the different picture presets? These are usually modes like "standard, vivid, sports, movie, etc".

Does this happen on all inputs? If not, what device does it happen with (make and model), and how do you have it connected to your TV?

If this is something that can be repaired, I would not recommend doing it yourself. If you do decide to have it repaired, you are usually looking at around $100-150 USD for an in-home repair estimate/diagnostic. Usually that goes towards repairing the TV.