I used KILZ for the primer, (also helps seal in odors)
Regular interior house paint over that.
I used the KILZ primer inside all the drawers, cabinets, on the walls, it seals in any color or stain that might bleed through.
It makes a nice base for paint.
I thought when I retired my Hobby would be RVing.
I was wrong, my Hobby apparently is Finding and stopping leaks.