All 53 colors of the NES

In Emulators / NES ROMs

Does anybody know a NES ROM where I can see all the 53 colors that the NES can display?

How about 410 colors?

This runs on an NES, and doesn't work in some emulators. It works in Nintendulator and Nestopia. Not sure if this helps at all or not.

How are 410 colors possible if the NES only has 53? Did they use extendes functionality like these mappers? Because I still need to see only the colors that the NES officially could display. And if there is such a NES ROM, it should work on FCE Ultra because almost all emulators use an indiviadual color pallette and I'd like to see how the colors are displayed with FCE Ultra.

Here's a link to when it was posted: