Limit 2 color pallet.. Interesting or not?

I'm working on a retro style game with very subtle "modern" touches. One of the things I've been experimenting with is limited color pallets. I went from 24 down to 8, and then 3 and now 2. I want the game to feel really really retro so I also went with a 16x16 tile but now I'm wondering if I went too far..

Has anyone else done something like this or know of successful games with very limited colors? I'm thinking about adding black back in to the color pallet, making two colors and black for some contrast but I want to keep it super simple..

It worked for Limbo...oh wait.

Two colors would make an interesting art style. This game does it and it looks pretty cool:

http://dukope.itch.io/return-of-the-obra-dinn

I find a two color palette appealing. They used it on Paper Sorcerer which was received quite well. In all reviews I read, the art style was commended. I think this game was a success but I'm not sure about it. They liked it on GOG. So I assume they sold some copies.

Read this review on softpedia for more informations.

http://www.softpedia.com/reviews/games/ ... 4979.shtml

Looks like Paper Sorcerer has sold over roughly 67,000 copies on steam (source: http://steamspy.com/app/263560), I'd say that's enough of a success. It does employ more than two colours though, it just MOSTLY uses two colours.

Downwell uses a similar idea too:

It's 3 colours and employs them fairly well.