Anti glare (matte) screen protectors will definitely reduce colour saturation and cause your screen to display slightly grainly (red/blue/green) pixels especially when the screen is displaying something white.
The closest recommendation I'd make is a Moshi iVisor Matte screen protector for the iPad. The screen protector is twice as thick compared to a regular screen protector. However, its washable and can be reapplied several times. It comes with a year of warranty. Of course that's probably the best you could do.
Anyway, the Moshi iVisor works this way.
- It's screen protector isn't an adhesive - doesn't attach itself to your screen
- It comes in 2 different colours -black/white frame. As such, you can turn your black iPad to look exactly like a white one, vice cersa.
- The frame (black/white) is the adhesive, it attaches itself to the frames of the iPad (clean the adhesive when you wish to remove and reapply it), it is slightly thicker (the twice as thick thing) thus it elevates the screen protector slightly and to the touch, it may feel as though there's a thin layer of cushion on the screen as you touch it.
Best of luck, this is one suggestion I have.
However, do not fold the screen protector just like for any plastic films, it will cause white dimples to form.
To add another point on point 1,
Due to the fact that the screen protector isn't adhesive, it provides a 100% bubble free application (No matter what, air bubbles cannot be trapped as the air is shared in the thin space between the entire screen and the protector) and can be self-applied. On the package it says something like "Proprietory technology by Moshi..." that's bull. It's actually basic physics and logic at work but that's really ingenious.
In essence, Moshi has made a really innovative design on their screen protectors. Ease of application - you do not need an Apple guy, colour options (turn a black iPad white, vice versa) and the bubble free application are the main reasons why you should get one of these.