Although I agree that the original $5 cash chip came out a tad dark, I'm not sure if the corrected version is actually an improvement.Here is the original prototype picture with the $5 and $500 overlaid with the new chip colors.
Considering that all the other cash denoms have an excellent, strong contrast between base colors and edgespots, the new $5 looks a bit pale now in comparison.
According to BGinGA, only the base color and the darker spots were made lighter. IMHO, the lighter spots should've also been made lighter to keep the whole design consistent and the contrast level where it was and in accordance with the other denoms.