This coloration is the result of a dilution gene that influences the dog’s pigmentation, triggering the coat to have a blue tint. Blue French Bulldogs are hugely popular for their distinct look. Blue Brindle: Blue brindle French Bulldogs Have a very coat that combines the blue color with brindle patterning. https://cheapfrenchiepuppiesforsa81470.amoblog.com/not-known-details-about-miniature-frenchie-puppies-for-sale-59971755