I'd like to add some detail to all my ships. Nothing super detailed but basic single color markings. Stripes, chevrons, circles, etc. Just to differentiate between ships easier. It's been a loooong while since i've done any model work. What's a safe paint to use on these miniatures? How do I want to thin out the color so it's not just a thick band of solid color? I'd like to keep the existing detail of the miniature and just add a bit of color. Any advice is appreciated.