So I bought a cheap tablet a while ago just to use abroad to keep in touch with people and go online and the like. However recently it's been doing this thing where, if I play videos, there's a somewhat blue haze about them. It's most noticeable on people, they look like they're smurfs or something (see crappy screenshot). Does this mean something in it has given out? I rarely watch videos on it but I recall this not being an issue the last time I did. I've Googled around and I haven't found anything to do with the blueness, but I'm just wondering if this is a fixable problem or not.
If the blue tinge isn't there when you're viewing images or web pages, then it'll be a software issue. If it only happens in the YouTube app, try uninstalling and reinstalling it. If it happens in all video apps, you'll need to do a factory reset (Settings > Backup and Reset > Factory data reset). You might want to check the manufacturer's website for software updates or troubleshooting notes.
It's something to do with flash being gimpy on linux sometimes. It seems to get fixed, then show up again periodically.
On the desktop the solution is to right click on it, go through the options in there and the one that says "use hardware acceleration" or similar, switch it to the opposite of what it's set to now. That's always fixed it for me.