So I had to do the math:

Several sources put the water surface area of the Lincoln Memorial Reflecting Pool at about 7.78 acres. So that’s about 338,800 square feet.

$14 million / 338800 = $41.32 per sq ft.

This looks roughly 8 in x 8 in which would be about .45 sq ft.

So this is about $18.36 worth of paint.