Get color from image
Hey people, I'm new to Illustrator and have a question. I want to use a color from an image that I put into Illustrator.
The exact things I did with the image are the following: copied it from Windows Photo Viewer into Illustrator, then put the 'cut out' effect on it, then copied it into a new Illustrator document that has a businesscard template and resized it fit the template's margins. Now I want to kind of 'enlengthen' the image by putting a square next to it. To make it look smooth, it has to have the same color as that side of the image of course. But that's my problem, I'm not able to select the color from the image and make a new color group with that specific color. The 'get color from selected artwork' button doensn't help much since I can't click it, for some reason the mouse turns into this 'can't click here' icon every time I move it on this button.
Any help would be greatly appreciated!
PS apologies for any unavoidable noobness
