Have you seen the tomatosite timeline with pictures?

Tomato was basically full size on day 26 and it didn't change color until day 52. For 18 days it looked exactly the same size, same shade of unripe green.

Here is a link that might be useful: Tomatosite tress timeline

In your climate, plants may need some temporary shade.

Cehck with the folks at your County's Extension Service office. They'll know.

Use this map
http://www.csrees.usda.gov/Extension/

Here is a link that might be useful: locate your County's Extension Service office

Over-watering will dilute the flavor of your tomatoes, though that shouldn't be a problem if the over-watering happens while the fruit are still green.

You can pick the fruit as soon as the color "breaks" (the second stage shown on the charts). Charts of the color development stages of red/pink varieties:

Old version:

Newer version:
http://www.lagorio.com/assets/pdf/lagorio-tomato-guide.pdf

It's advantageous to pick the fruit soon after color break. For one thing, heavy rains (or manual over-watering) can't affect them (a good thing, as too much water at that stage results in split fruit). Another advantage is that your ripening fruit are safe on your kitchen counter where the bugs, birds, and hungry mammals can't eat/steal/wreck them.

Or do I just need more patience?<?i>

9 times out of 10 - yes. :)

Dave