No, we won't for a few different reasons.
First off, everybody has different standards of what is acceptable as far as paint is concerned. Our standards are pretty high, so by the time we would have all the parts prepped and painted, the cost would be very high and a large percentage of customers would complain that it was excessive. If we lowered the standards to make it more affordable, then we alienate those who have higher standards.
Secondly, once painted, you increase the likelihood of parts arriving with some kind of damage from shipping. Nobody is happy when that happens.
We've found it best over the years to let the customer decide what his or her budget will allow and to choose a good paint shop in their area that suites their needs and tastes.