well, thinking about it logically, green is a very hard colour to create in natural flame... i mean, of all the star types we know of, they have the colours of the different levels of flame on earth (red, orange, yellow, white, blue).
in order to create a green flame you need to add a chemical or ink or some other artificial additive to create green flame (did it on a school cadets camp once, got bored on picket duty so started burning stuff out of my ration pack =P)
so... its entirely possible to have a green star if you add enough ink to it i suppose... =P
also, something to note: has anyone read Day of the Triffids? i forget who wrote it, but its about how the earth goes blind because of a green meteor shower in the atmosphre of earth destroyed the vision of everyone who watched it as the eye is particularly sensitive to green light.
so! if we ever did find a green star, bring your sunglasses =P
EDIT: also, excuse my ignorance, but whats all this about a green star killing a white dwarf? is it some racial joke i missed or what?
