[ubuntu] Poor video quality; driver issue?

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http://ubuntuforums.org – I have been a Windows user all my life but got bored of it. Decided to give Ubuntu a go. Downloaded and installed Ubuntu 13.4 yesterday and so far am loving it. But one thing I've noticed is that graphics quality does not seem to be as good as it was for Windows 7 on the same laptop. (Lenovo Z580 with Intel HD 4000 integrated graphics card) The colors don't seem to "pop" and appear a bit washed out and text will give me a headache sometimes because it seems hard to read. But the main issue is video quality, I've downloaded VLC and have tried watching videos but the quality is very po (Hardware)