Depending upon how dark the color is your ferret sounds like a chocolate or
champagne blaze (maybe wannabe blaze).  Is the arrow marking a line from the
face toward the back of the head?  That would be a blaze.  Is it only a mark
on the back of the head it is 'wannabe' (My term based on
AFA/LIFE/FURO/Independant standards - also called a 'blaze mutt')
 
Champagne is a dilute of chocolate.  If the color is rather like a Milky Way
bar its chocolate (funny that name huh?) but if it is quite a bit lighter
like 'oyster white' up to cappacino or something like dishwater blond its
champagne.  There are light chocolates that seem to be very like dark
champagnes.  Its a scale thing not a definite line.  They are both the same
color genes but with a different amount of concentration.
 
bill and diane killian
zen and the art of ferrets
[Posted in FML issue 1461]