I can only vouch for the Eagle and Ark Royal as fixed wing carriers of the 1960s and broadly speaking the actual markings didnt change much, but by that time they had discovered "Dayglow" paint (orange, red white) and it hurt your eyes on a bright day. You also need to remember that this was allegedly non-slip paint over armour steel so your nearest equivalent would be something like 1400 grade "wet dry" with lines painted on it. For accurate detail, if your deck park is behind the island you need a model sailor coughing his lungs up due to the sulphur from the funnel and you need to check out which areas were unsafe to park "bombed up" aircraft as radhaz (radar signals) could, and did, fire the armaments or release mechanisms.
Dragonsinger