Preview Yosemite Bug?

Is preview bugged in YOsemite or is it because of the Nvidia Web Drivers??

I open an image in preview copy the image and create a new file and paste it the color looks more purple?!??!

The blue image in the back is the original and the purple is the new file created copying and pasting the image. Problem is not there if I use photoshop. So, I guess it is a preview bug. Can any one confirm??