1974 standard color seems to have been white on most 22s that I've seen. 1973 boats were either red or a yellow/brown/beige color and there may be some 1974 boats in that color too. I've pictured it below.....does that help? Check the various paint manufacturers web sites for color chips, WEST Marine might also have that on their web site. Still, I'm not sure an EXACT match can be found from any standard paint color, custom matching may be necessary. However, as long as you paint the entire topside surface of the hull, it really doesn't matter if the color is EXACTLY the original shade.
I've attached a few pic of 1973 and 1974 22s as well as one of the aft quarter of a 1973 JAVELIN. quality of the pic and level of lighting will affect the color as will different computor monitors.