you could use caliper paint but it wud give it a kinda rough look because it would be brushed on as opposed to spraying on as goldstar did! It can be done but wouldnt look too neat as you would see the brush marks - speaking from experience.
The cam cover is pretty easy to remove, just progressively loosen thescrews otherwise there is a danger that you will round the heads and have to drill them out. Haynes makes this all easy
i want the paint to last more than 6 months hence asking about caliper paint - it came to me when i was looking for some on Ebay - "hey why not do your rocker cover!"....