How does silicone lay down? Is it think like a poly white?
I know it will be thicker than black, black can be printed "less than opaque" and still appear opaque because shadows help. Whereas white is the opposite, shadows make things worse, hence you need to make sure you are 100% opaque.
We will be laying down vinyl for the numbers but avoiding it for the front and sponsors due to the heavyness.... then again, I might be shooting myself in the foot with the white on dark vs dark on light that we have done for them in the past.