Science Fair Idea: Color Preferences

I was just listening to Todd Mohr's Philosophy Podcast and he said that 'our preferences are like our DNA -- we can't choose them'. It makes me wonder if our preferences are in our DNA.

It'd be interesting if someone would do this science fair experiment. Make a sheet of color swatches -- you can probably assemble one from color chips from the local paint store -- and then show it to people and as many of their family members as you can find, going back as far as possible. Ask everyone to choose their favorite color and see if there's any genetic correlation.