In the top right hand corner, I notice a spectrum of colors about 2in sq. Noticeable on certain channels more than others.

Plasma screens are extremely susceptible to getting broken from any impacts to the face of the screen. What you are describing sound very much like distorted or dead pixels. It may not be a fixable issue, you may have to replace the entire unit or live with the purple bar. The reason you don't notice it as much when the screen is dark is because purple is on the darker end of the spectrum, and will be most visible in contrast to lighter ad brighter colors.

Google the model number with "problems" since this sounds like a damaged Optical Light Engine which has been burnt/damaged by the heat from the lamp and this is a common issue on this and other Sony sets.

You might have a Service Co. come out and look at it. It sounds like the Z module is not doing it's job of erasing all prior images after a scene change. Some models there are adjustments for that internally. ( only for a tech ) Start a paper trail now.

TRY USING THE COLOR CONVERSION OPTION ,,ITLL FIX THE COLOR

This problem was probably there before, but you only noticed with the new "Brighter" bulb.

This TV will require replacement of the LCD Prism unit.

This Prism blocks and allows colors so that the 3 LCD images may be mixed to produce the final image you see on the screen. When this becomes damaged or defective, it leaks colors (light). This Color Leakage apears as spots on the screens.

Where you see the spots is where the specific spot on the prism that is leaking light, the specific color that is leaking also.

This parts cost alone is normally $500 to $1000 dollars but is usually replaced under warranty. If out of warranty, I suggest living with it or selling it if out of warranty. Turn down the Brightness and it will not be as noticeable. I am sure you only see this with bright images.....like white backgrounds and such

Good luck.....

i want to download the driver softwere of samsung clp-300 series vista ultimate supported

nothing to worry about. On mine, I can really see the difference when the temperature is below 20 degrees (F). There is a ton of water vapor coming out of the right hand exhaust but only a little bit from the left.

sounds like light engine to me

Sounds like the same problem i had recently, Take the front off, (its safe so your ok) You will see the 3 lenses which are ajustable, Just keep adjusting 1mm at a time until it solves this, Took me about 45 mins to get it perfect, Persist and you will get there!! Hope this helps

Your deflection yoke (a coil around the neck of the picture tube) must have gotten turned. Your can turn the picture upside down by rotating this coil. If your set is in warranty, you should return it. When this "yoke" is adjusted the color is affected too. If you try this yourself you'd void the warranty and mess up your color. Stargazer