Sitting in a hotel lounge in Delft (The Netherlands), Chris and I discovered, after a few gin and lemonades, that his digital camera (Canon Digital IXUS 750) has an awesome function called “Color Accent”. Turning this on allows the camera to focus on one color and filter out all others, making all other colors in the rest of the shot black and white.
Below is a photo I later took in our hotel room bathroom using this function. As you can see, I focused the shot on the orange of the shower curtain. Quite a nice effect.
Photo taken with a Canon Digital IXUS 750 using the Color Accent function