cmayna, at "American Classic Truck Pats Inc." ( Go Here ) The greens that were available in 1950 (that is the year of your truck, isn't it?)were Forster Green, Seacrest Green, Mist Green, Crystal Green and Mist Green/Crystal Green (was this a two tone or was it a mixture of both?).

If yours is orginial color, it is probably "Seacrest"