French Bulldogs should only come in 
3 colours 
BRINDLE, PIED  & FAWN
French Bulldogs should NOT be 
Blue, Lilac, Chocolate, Black & Tan , Merle, or any colour or pattern other than the colours recognised in the 
Kennel Club Breed Standard
What are FAD colours - 
Blue, Chocolate, Blue Pied, Blue Fawn, Blue Brindle, Black & Tan. and Mearle
The Kennel club will not register a French Bulldog in these colours, they will be labled as 'Colour Not Recognised'

NO BREEDER WHO CARES DEEPLY ABOUT THE BREED 
WILL EVER BREED THESE COLOURS INTENTIALLY
NO FRENCH BULLDOG CLUB OR BREED STANDARD WORLDWIDE ACCEPTS THESE COLOURS