A computer made from organic materials? That's so 80's. Seriously, I'd love to do my part to save the environment, but I wouldn't be caught dead holding a bamboo or wooden laptop.
What I'd like to see is a burnished aluminum or carbon fiber with a gun metal gray finish. Maybe some black matte trim and jet black keys against bluish backlighting. They can keep the same form factor... and please don't make it as flimsy looking as the Macbook Air.
To each his own... I personally prefer style over coolness (which I think are two entirely different things). the example you make, makes me think of a comparison between the style of a Ford Mustang (end 60s) and the carbon coolness of an Audi R8. Both great cars, but for different people.
There are actually wooden or bamboo laptops appearing on the market right now. I guess it depends on the way they do it. I would totally go for a dark bamboo - aluminium combination.