I think 10 dollars is a lot to ask for a color picker when there are lots of established and free online options (Adobe Kolor, Coolers, etc.). If you could match the featureset of those programs with some sort of cloud-saving functionality/library for my palette, I'd probably go for it. Especially if it has a Linux-native frontend like GTK, I'd end up using it pretty frequently.
Your call though, I'm just a guy who uses software.
Thanks. Paletter's feature set goes quite beyond what the mainstream tools offer, but maybe that needs to be more clear.
Cloud palettes are probably coming. As for Linux, would be a tough call since most designers are on Mac and Windows.