If you had a pedigree on your dog that would tell it best.........
if no pedigree ... everything is a guess...
Colbys Primo....... Foundation to a good portion and prototype of all Amstaff..
Colby also the base of most APBT
Any good looking workable Amstaff is going to resemble a Colby dog, (you following?) ..
GO to google search.. put in Colby Bulldogs Bull terriers .. change the search to images... ALL OF THOSE that come up that are NOT red nosed and DO NOT have pink or any color eyelid other than black generally dont make the cut.
Your dog if it was going to lose its pink would do so by the time its 3mos most often by the time its 6wks or so. ...
inbred blk nose dogs will eventually produce a red nose.. the pink spots usually associated with the red nose. .. Colbys have done a good deal to eradicate any red nose in the genetics of their dogs ..
the dillutes come with breeders who have colby dog breeders who havent followed the same colby ethics..
Heinzl used a ton of colby and it was only what worked well in the box so that does not control pigment because they are not breeding for color. So this would be a source of dogs that were Colby/Tudors/Lightner that would have pink eyelids and such.
Colby dogs also throw blue eyes as do boyles .. NOT a desired trait and should NOT be bred for.