Not to be too nit-picky, but most British A/C listed as being cleared
doped in simple color explanations are actually clear coped first
with two to three coats of unpigmented cellulose dope, then top coated
with mil-spec varnish. The actual type of varnish available, and how
heavily it was appplied accounts for the amount of Yellowing or tan
effect.
The linen fabric used in British A?C of the period was almost pure white
in its natural state. Its the varnish that provided the tint.
Careful study will reveal that the earlier vintage British A?C such as
the Tabloid,Bristol Bullet,etc... look very white indeed, being only
doped at that time............