Yesssssss, i know that the subject is a little messy but, lol you will understand what I’m talking about in a min.
When you Printscreen on a MAC, i naturally use “CMD + CTRL + UP + 3” and that copies it to the clip board which is fine. But, when i then go into Photoshop to open a new document and paste, the colours are slightly different to what they actually are.
Has anyone else come across this and if so, is it something in Photoshop etc and is there a way around it to get a TRUE Printscreen? 
I normally use Grab - its in Utilities folder is it?
Dont really use it that often.
Hmm, never seen that before.
How does it work? I have opened the program but nothing seems to be happening… :hehe:
Go to Grab… Just opens a toolbar menu @ top.
Go to capture & select screen or window / selection etc…
Theres a little camera cursor that appears… click that on the bit you want.
Hah! Cool, got it sorted now 
Any good for ya Man?