blue;
short light line bamboo rods are the current favorite, and so bring the highest prices. Watch ebay for H-I Tonka Queens, Tonka Princes and South Bend 291's, these are 7 and 7'6" 5 wts that can be had fairly cheap depending on condition and are worth the trouble to refinish. It might make more sense to buy a blank made by a modern builder, it will be a better rod when done than any of the more affordable production rods.
john