I said I'm done, but clearly you guys want more proof, so here you go.
The order card lists 3 separate orders for the purple/lavender 25¢ chip. They changed the formula more than once.
In the first order from 9-19-51 the customer orders 1,000 "lavender" 25¢ chips.
Then on 5-3-52, they reorder another 1,000 25¢ chips, but this time, they decided to change the color, as the order card notes "1/2 oz purple dye added". Clearly, this addition of the purple to the already lavender chips was intended to make them a little bit darker. Note, you can also see that the color and depth of purple changed simply by looking at the chips themselves.
Then at the bottom, on 7-28-52, they order another 2,000 of these 25¢ chips. They change the formula a second time, and the full ingredient list is given. That purple "dye" was added to the formula for an already lavender chip to make it darker. So, we know that the formula has to have both the lavender color and the purple color in it, because the purple was not used in the initial order of the "lavender" chips, as the order sheet expressly states that the purple color was "added" in the second order.
And since we know that the formula uses both the lavender and the purple, we also know that the amounts of each ingredient preceeds the colors and that it is in fact "3 oz of lavender color" AND "1/2 oz of purple". Both were used.
This is also evidenced simply by looking at the chips themselves.