The clay which lies under the soil is of a bluish-gray colour, and is plastic but not very tenacious.
The fine cochineal, when well dried and well preserved, should have a gray colour, bordering on purple.
A good diamond should never contain small spots of a white or gray colour of a nebulous form; it should be free from small reddish and brownish grains, that sometimes occur on their surface, or in their interior.
It has a large flat head, of a bluish-gray colour, a thick yellowish muzzle, and cylindrical neck.
Another was of slaty-gray colour, from two to three feet long, and smaller in diameter than the black snake.
Its form is that of a small, anfractuous, rounded grain, about the size of a pea, externally of a gray colour, but white and farinaceous within.
In wandering about through the spinifex upon the cliffs he saw four small kangaroos; and near the waterholes one of the crew saw a fifth, of a gray colour and of a larger size than usual.
The tail consists of a few slender curved feathers of a gray colour.
The men were quite naked, and of a bluish-gray colour, from the slime of the Nile, with which they smear themselves as a protection against the gnats.
The feathers of the male are of a brown-gray colour, the feet and beak are like a turkey's, but a little more crooked.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "gray colour" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.