Same seed different type of container, extraordinarily different shades of pinks?? I planted impatiens inside in April, later I re potted...

I planted impatiens inside in April, later I re potted to various containers(one tin one ceramic). one and the same seeds are flowering exceedingly different shades of pink in the different containers. The tin have a few separate plants growing with dull hurricane lantern pink flowers and the ceramic have a few separate plants growing with bright vibrant pink. Both be watered the same and used same potting soil? Does anyone know why this happen
Getting equipped to start the garden - counsel?
Answers:    Acidity and Alkiline of the soil.
Hydrangeas are another example of this.