I would go to Lowes or HD and see what they have in a 5 gallon bucket of a color they mixed wrong, they are cheap. If not, then I'd use an outdoor paint like you would for your house, and in a light color. Roll it on, the texture won't matter since its at the lease and you can roll on multiple coats a lot thicker and easier than trying to spray it outside
Ever spit it out rather than swallow it?
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning.