Can you connect a low resulution camera to an Arduino board?

Can you connect a low resulution camera to an Arduino board?
It supose to recognize a specific color field, something like a large square.

Sure, something like this
http://www.parallax.com/Store/Sensors/ColorLight/tabid/175/List/0/ProductID/617/Default.aspx?SortField=ProductName%2CProductName
http://www.parallax.com/Store/Sensors/ColorLight/tabid/175/List/0/ProductID/429/Default.aspx?SortField=ProductName%2CProductName

Don't see the interface specs there tho.

Thanks for your answer, Isnt this a kind of light sensor what recognize the average color?
I need a more camera like sensor with like 100 pixels or something.

100 pixels?
That's even worse resolution than iPhone4.

Look for camera with serial links, couple sites have an examples of code to help you start:
http://www.sparkfun.com/search/results?term=camera&what=products
http://www.linksprite.com/product/product.php?lang=en&class2=96