Canon Powershot colors aren't bright?

Is it a white balance problem, perhaps?

Whenever I have a question/problem such as yours, I read the user's guide (aka "the manual").

It is amazing just how much I always learn from that.

Perhaps you might find an answer in the trouble shooting section?

If that doesn't help (or if I'm interested in a product I don't own), I check the manufacturer's website.

They have descriptions and specs for their gadgets, often have user forums, and the decent manufacturers all let you download the manuals in electronic form (so losing the book is no longer a problem).

99% of the time that does the trick.

I have both the s90 and s95 and yes, they can go quite orange when they are in low light situations. The trick is to use a custom white balance for every new low light situation. I have my function button set up to do a custom white balance when I press it. It's easy to set this up in the menu. Once you have the button set to custom white balance (that's the little symbol with the triangles) when you are in a low light situation just point the camera in shooting mode toward a white or neutral gray surface that is getting the same light as what you want to shoot. Then press the button. The camera will adjust the white balance. Often a white wall/shirt/ceiling works well. I love the ease of doing this with the s95...faster than my nikon dslr. The other control on this camera that I use all the time is the ev control. I usually keep it set at -1/3 or -2/3. Play around with it...it's useful. This is a great, great camera and does require a bit of initial effort to learn how to use it but it is worth it. As far as iso values not being available- they are available in most modes including p,s,a,m etc. They may not be available for some of the scene modes but you probably don't want to use those modes anyway as there is no raw capture. Check the manual- it knows more than I do. Good luck and happy holidays.