I have 2 Maldives bags & a brand new Papeete; I'll try & post some photos of them together as soon as I can.
But they are totally different colours. You definitely need to get both!
Maldives is light blue-aqua; Papeete is slightly darker green-turquoise. They're both amazing colors in their own ways.
Maldives is less intensely colored, and even with new Maldives has a slightly pale and faded air that gives it a delicate and ethereal look. I love Maldives insanely. Of all the Bal colors I think it's the one that looks best with silver, it's not metallic at all but a light & veiny Maldives almost looks like it shimmers.
Papeete is a different animal. It's more saturated & a bolder and more robust color. It's not at all like other green shades - it's not like a green you find often in nature so it stands out. It's a fun, modern yet retro color - think 50's crockery.