A Civil War re-enactment.
More seriously, one such blue-gray blend is called periwinkle.
Lavender
Blue gray and brown would make a grayed brown color. It would be a very muddy neutral. The blue would make it a cool color.
brownish-blue gray
dusty rose
taupe
It's a brown nut, with a grayish tint.
More of a brownish grayish color like cement but with a huge mixture of brown paint in it mixed all together.
brown
turquoise
Just mix a bunch of colors and every time you mix three different colors together they'll make a grayish brown color
brown
Brown
Grey
brown
Brown Brown
cheese
purple or brown