Seems like your original post is a trick question... you are looking for a "STOCK" wholesaler? or CUSTOM ADA sign wholesaler...
Do you need to match existing?
On a stock 'Baby Changing StationI would google it, they are all about the same - but
ADA Braille Baby Changing Sign
gives you color options...
On ADA signs, I have been saying this for years... do not trust your ADA sign wholesaler to make a compliant sign - know your ADA - at least enough to know when the signs you are getting are compliant.
I would look into
ADA Manual Order - they don't call her ADA Sign lady for nothing...
If you start getting into making your own, I suggest finding a vendor who can do the braille and tactile for you and you finish as needed - if you have the capability.
I suggest an old merchant member:
Custom Engraved Products for Businesses and Institutions