Can anybody help me with these stamps? They all have different color variations but only three colors are recorded for the type I unwatermarked per stamp smarter.

I have a color identifier, but it does not seem to do the trick for true identification of these colors. This is what I think the Scott numbers are:
A:250
B:250
C:249
D:248
E:250
F:250 (not a pretty example, but it had enough color variation to be included

)
... but I have no way of verification if this is true or not.
Any help is appreciated!