Freezes and screen turns purple and blue

The video you are watching or trying to watch was obviously copied over too it, it may be an MKV file..(blue ray file) i hate to tell you this but...the Chromo AAAAAAAA White 4gb 7" Android 4.0 Touch Capacitive Screen only has 512k of ram...(thats brain power to perform tasks) in other words....the movie file your playing has far too much data in HD and DOLBY data to play it smootly and your device is stalling using up all the ram tryng to play the movie.....to play a HD Movie without stuff ups you need at least 2gig ram not 512k thats like half a gig ram you have there and just wont do it. you already posted the specs in the title of this problem see >>> Chromo AAAAAAAA White 4gb 7" Android 4.0 Touch Capacitive Screen 1.2ghz 512 RAM Mid Tablet Pc Wifi 3g Camera Tr-a13 - Bonus USB 2.0 to Micro USB Adapter.....take note it says ....512k RAM !!!! you need more ram at least 2gig ram to play HD movies....you could try and see if you can get extra ram for these...im sure you can.