Comment 24 for bug 968489

This only affects Youtube.

Here is a work around if you use Firefox.

Disable hardware acceleration for flash, and also disable hardware acceleration in flash player settings (by right clicking video, in precise this doesn't work in Unity 3d, have to do it in Unity 2d or GS because of https://bugs.launchpad.net/ubuntu/+source/adobe-flashplugin/+bug/865672)

Then use flashvideoreplacer addon for Firefox with gecko-mediaplayer as the backend (set gnome-mplayer to use vdpau to get gpu acceleration. This allows you to watch Youtube in the Firefox without flash (there are also dedicated Youtube players like minitube and Smplayer,--the latest version from ppa has a Youtube viewer)

Alternatively the blue tint will go away if you enable hardware acceleration for flash but then it becomes very unstable and crashes on many sites.