Common colored mags are common in northern and southern CA. I just saw one today. A nicely colored one is rare. Gigs can be found from time to time, but the blue and green ones are very rare. Purple seems to be the most common of the brightly colored ones. Brown and tan gigs are more common now, but I'd still consider them rare. All of the gigs I've seen lately are in bad shape and none are responding to antibiotic treatment.
I like gigs because of how they look, but if I were to choose between the two in terms of getting it past the acclimation period, I would choose a mag every single time.