It looks like the body shop was trying to BLEND the new paint into the old paint. It also appears that the painter did a poor job using the technique of BLENDING. This is a common practice of body shops when repairing body damage since insurance companies will not pay for a complete (panel - door - fender - etc.) paint job. The bad part about this kind of a repair is, if you polish and wax your car repeatedly like what we do. The repaired area tends to begin to stand out the more we polish and wax.