macbook cracked inside out

[fromalk]

Hello everyone,

I purchased a macbook for my girlfriend last friday, and she absolutely loves it and so do I, however yesterday I noticed that there was a color difference in the left upper corner, 2 thin lines of a half an inch to an inch long each , the outside isn't cracked but under some lightning angles you can see these cracks pritty well...

Now should I go back with this? Or just leave it like it is?

 

[WillMak]

The manager will probably tell you it's within spec and non exchangable, but if you argue hard enough they'll probably succumb to it.