Why did my Apple logo turn blue at start up?

At start up, the Apple logo turned blue (originally gray).  The outline of the logo also became pixelated, containing the colors red, green, yellow, etc.
I also have this problem where whenever I am using an application (during the first hour after start up) they would deactivate during the first five seconds of use.  I would have to constantly click the application to reactivate it.  For example, as I am typing in Microsoft Word, the application would deactivate enabling me from typing, until I select the program to reactivate it.

Hi tessira_c,
I would suggest starting to troubleshoot this issue by starting your MacBook Pro up in Safe Mode. See this article for the procedure -
OS X Mavericks: Start up in safe mode
http://support.apple.com/kb/PH14204
Does the issue (blue Apple at startup) occur when starting this way? If so, use the steps in this article to continue isolating the issue -
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/TS2570
Thanks for using Apple Support Communities.
Best,
Brett L

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