I couldn't find GI Green, do you mean Army Green? You shouldn't put too much stock on how a color looks in a picture. You don't know what kind of lighting was used. It may or may not look the same in your house. The only way to know how it's going to look in your house is to sample. You could start with a sample from Samplize.com. I will say that greens look a lot greener on a wall than they do on a chip, so you might be surprised by the intensity of the color once it's on your wall. Also, once the paint is on four walls it will be further amplified. I always paint fairly large samples (8-10 sq ft) before committing to a color. It's sometimes not until I see it this way that I realize it's not what I want. Depending on the lighting in the room you may also want to sample on all four walls as it will probably look slightly different on each wall.

You honestly want to paint a room this color This is G.I Green BTW I think you need to provide some context for this choice I looked at the other color too. I think with all the green from the trees outside these are both wrong. But lets see the space .