My new ipod's tint is off balance

Question

We have 2 other ipod touchs and today my moms came and everyone noticed that the tint was different. It looked slightly yellowish.

Answer 1

Apple has used multiple manufactures to supply them with LCD screens that are used in the iPod Touch and iPhone, and those manufacturers have also used different polarizer filters in the LCD.
I have owned four, yes 4, different 8GB 2G iPod Touches and all four had screens with distinguishable characteristics.
1st 2G Touch (Near Perfect Screen):
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Purchased in November.
Light leaked out at 2 small gaps on the left side of the screen, 3 hot 'green' pixels.
It had a near perfect screen with extremely wide viewing angles in any orientation. There was no screen inversion/negative blacks, or blacks turning blue/purple at any angle. Color hues/warmth was somewhat similar to that of my HP f2105 S-PVA monitor.
Though certain light shades of gray appeared pink, and it had minor scanlines, but the screen in this iPod Touch was very desirable. The volume up button broke, so to my dismay I ended up with a replacement.
2nd 2G Touch (Washed Out Screen, Blue Tint):
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Received as a replacement in March.
Light leaked out at 3 small gaps on the left side of the screen, 1 hot 'green' pixel.
The screen was somewhat washed out (lower contrast ratio) than the previous 2G, narrower viewing angles.
Colours that should appear light gray no longer looked pink as with the other 2G, however certain shades of purple now looked blue or blueish green. Another downside to the screen in this particular iPod Touch was that there was a distinct 'gradient tint' , where when held in portrait mode and looking at a white screen (like the settings screen), the top half of the display would appear to have a blue tint (like the 1G Touch) while the bottom half of the screen would have a yellow tint.
All in all, I am not pleased with the screen on this iPod Touch...planned on selling it, since Apple's technicians didn't find anything wrong with the screen.
3rd 2G Touch (Overly Saturated Screen, Yellowish Green Tint):
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Purchased in the last week of April.
Still had the above iPod Touch to compare it to.
No light leaks, no dead/hot pixels.
The screen was overly saturated, and had even narrower viewing angles than the washed out 2G screen. Two major problems with this screen was:
Pretty much every shade of gray had a very very ugly yellow-green tint to them. So much so, that I really couldn't stand it. It also had the worse degree of scanlines/interlacing that I have ever seen on an iPod Touch.
Scrolling from one page of the home screen to another page would result in horizontal lines through every icon and a ghosting-like icon.
I Decided to keep the previous iPod Touch, and give the this one to the person i hated the most as a gift .
4th 2G Touch (Near Perfect Screen):
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Purchased a week ago.
No light leaks, no dead pixels.
Still had the 2nd 2G Touch to compare it to.
The characteristics of this screen is VERY similar to that of 1st 2G iPod Touch that I purchased in November: Perfect warmth and good color rendering, but light shades of gray look pink.
Viewing angles are not as wide as the 1st 2G iPod Touch. No scanlines/interlacing whatsoever.
All in all, I hope that nothing ever goes wrong with this iPod Touch, because I love I am very pleased with the screen.
Yikes this is a long post...