What is the selling rate per pound for individual colors?
Colour seperation matters more in which audience will be interested (AFOL's knowing they used some colour(s) more than others vs. parents wanting a pile for their kids) than for price.

Lots of things matter a lot more then the bricks being seperated by colour, some examples:


Whether the bricks have play wear
Whether the bricks have been miscoloured by sunlight
Whether the bricks have been exposed to smoking
The actual selection of bricks - i.e. are they all standard bricks or are they something less common in (some of) the pile(s)
Where you are in the world
...


So we don't have nearly enough information to give a good answer.

They are other questions on the site where people give estimates.