Colors
In reference to the AKC standard....
Color: The Border Collie appears in all colors or combination of colors and/or markings. All colors are to be judged equally with no one color or pattern preferred over another. White markings may be clear white or ticked to any degree. Random white patches on the body are permissible but should not predominate. The predominant ear color should match the primary body color. Color and markings are always secondary to physical evaluation and gait.
Color: The Border Collie appears in all colors or combination of colors and/or markings. All colors are to be judged equally with no one color or pattern preferred over another. White markings may be clear white or ticked to any degree. Random white patches on the body are permissible but should not predominate. The predominant ear color should match the primary body color. Color and markings are always secondary to physical evaluation and gait.
Photo reference: https://bordercolliecolors.wordpress.com/2015/08/28/english-version/