That dark of a color often tends to Oxidize rather than fade.Dont use MAB brand or you will surely have that problem with in a year.Been there done and seen that!
If you have a Sherwin Williams or a Farrel Calhoun's there your best bet for paint that will cover and last(best),for a reasonable price.If memory serves Farrel's,outside latex is 16bucks a gallon and worth every last sent.Like said if water gets behind it, it will all fail fast.Caulk all cracks or be prepared to repaint in a few years.
In my opion on exterior, Oil primmer is best with a Latex finish coat,or tw

r three or four to cover if you use Porter Paints brand. :no: And Benjamen Moor Doesnt clean up to well,do to its parshell Alkaid bass color in there exterior latex.So use a cheap brush or buy some brush cleaner!
8year painter here! Yaa two painters onboard! :haha: Pass the lacquer thinner now please!
:worship: Farrel Calhoun's! :worship: