Sony A550 colour over-saturation problem

[Thefirewitch]

I've been using a Sony Alpha A200 for 3 years with some pretty good results, some here: http://www.zigsphotography.co.uk/photo/cult/index.html

2 weeks ago I bought an Alpha A550. With not-so-pretty-good results....
Every shot I take is so over-saturated with colour.
I have put the settings almost the same as my A200 (which I sold on eBay) but the results are so different. (Worse!)

I have tried changing almost every setting but can't figure out why the over-saturation.
Sony Alpha A550, 'out-of-box'. Sony f1.8 50mm lens, star filter.

Okay some examples. 10 days ago I shot my friend's band, using A550 for first time. Here are the results:
http://s279.photobucket.com/albums/kk137/El__Diablo/SALLB/
I have had to heavily photoshop them to get them to that "standard", de-saturate them so much.
Those were slightly better than my horrendous results last night. Photos above I used creative style vivid (by mistake!)

I thought maybe that creative style vivid was the problem, so I changed it to standard. Oh dear....
Last night I took these, very dark club, not much lighting, as shot, only cropped and reduced from 350 to 72dpi.

First example: Shutter priority, f1.8, ISO1600, 1/125

Shutter priority, f1.8 ISO800, 1/160

Shutter priority, f1.8, ISO400, 1/25

I shot some in creative style 'black & white' mode, they have all turned out fine (compared to above!)

Shutter priority, f1.8, ISO400, 1/50

Shutter priority, f2.0, ISO400, 1/20

I also used manual and program modes but they were even worse, forget about those. The reason I used shutter priority is because that is what I had most success with on the A200 with this lens. The photos above, why is the bass player orange? It wasn't like that in the club!

What am I doing wrong? Can anyone please help? Can you see something obvious that I have missed? Have I ticked a box in my settings which shouldn't be or vice versa???

When I use 'live view' I can see the over-saturation before I take the shot!

 

[POAH]

how does it look in a different situation - gigs have a lot of coloured spot lights.

 

[Faldrax]

Try taking a few shots in RAW (I am assuming you are currently shooting Jpeg since you are using creative styles).

In Sony IDC you can then apply the various settings and 'play' with them to see what gives the results you see - and more importantly, what gets them the way you want.

Of course, you may then decide that RAW is a better option anyway (since it's a lot easier to correct things like this)