If Bone is too dark, it may be Linen
Biscuit is similar to Linen.
I have 3 toilets ~20 years old (house I recently got). They are American Standard and say 4083 S87 inside the tank.
I am trying to replace the seats all of which say Church on them and they match the toilet color perfectly. They are an off-white, almost light beige. When I brought one to Lowes the replacement AS seat in bone (only one they had) was too dark
When I also look up the model 4083 online some sites (for other parts) say there are 2 versions (024 and 031) yet there is nothing like that on mine (as far as I can see).
I been surfing around but cannot find out how I may ID the toilet color from maybe some code on it somewhere.
I just realized that the sinks seems to match (they are AS as well).
I looked under and saw 475/6 (model I assume) stamped in it and printed on it sys "bone".
Yet the bone color at the Lowes (AS replacement lid) seemed a bit dark when I compared to my seat.
Church lists brand colors as well but I guess I have to use my best judgement.