Thanks for your question. As far as paint goes, I never choose color based solely on a picture. There are many factors that affect color, the primary one being light. So lighting used to take a picture, time of day, time of year, and especially the light and resolution of a screen can alter how a color appears. Go by what the color looks like that you had mixed. As the paint dries and cures the color will change some as well.

Thank you Marilyn for taking the time to explain that. Does this paint usually dry darker? (Or do I have that backwards?)

Oops, one more thing. Is there a way to bring out more of the grey? I have a new build with a great room. It has many windows. Would a darker room bring out more of the gray, do you think?

What is the length of the wall?