I've seen them all year round here.
I've had two Hayden Harnett bags in Chalk which is a nice alternative to white or ivory. The color goes with everything, and the leather doesn't seem susceptible to stains or color transfer.
I'm so tempted to get a Havana Hobo in Chalk (and need to decide today, which is last day of 30% discount). Have you used any products to protect your Chalk bag or keep it clean?