The image you showed has classic chromatic aberration, as evidenced by the purple on one side of the highlight and green on the other.
Another issue common with small sensor cameras is light scattering on the beyer filter, which usually manifests itself as purple halos on highlights (this is because the green filters scatter more light and are also more numerous than the red or blue filters. Purple is the complementary color of green, so the scattered light is purple, hence the purple halo). Canon camcorders tend to exhibit this a lot, but you see it to some extent on most small sensor cameras (Rarely on full frame sensor cameras). If you see purple halos without a green counterpart on the other side then it is light scattering that is causing it. People commonly refer to this as chromatic aberration since CA looks similar, but it is actually due to the sensor design.