I'm betting they figure out how to correct the lighting and text contrast issues as well. (blog.the-ebook-reader.com)
One more thing: Some people have noticed contrast issues with the display at darker brightness levels. (androidcentral.com)
Need for Speed is not perfect in this regard however as it does suffer from lack of contrast issues that while not significant will be inconvenient for most color blind gamers. (dagersystem.com)