The blue issue may be related to the fact that most AMOLED displays use the PenTile sub pixel arrangement. My smartphone has a Super AMOLED Plus display with a standard RGB subpixel arrangement and does blues without a problem. The blacks and saturation are excellent compared to standard LCDs. Can't wait til it scales up to TV sized panels.
I wouldn't be surprised if the GP2X Wiz screen problems are from a manufacturing defect. The screens have proven robust in smartphone applications thus far.
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