"There have been various attempts over the years to "improve" the Doom palette. While these attempts had various goals, and succeeded to various degrees, one question remains: did the authors get paid billions of dollars for recoloring pictures? No? Then their attempts were objectively inferior to one group of people who did!



That's right, now you can play Doom with any one of no less than 37 real Instagram filters, all painstakingly recreated in the Doom engine! Memento Mori with Mayfair! Requiem with Rise! Icarus with Inkwell! Alien Vendetta with Aden or Valencia!"

http://www.doomworld.com/vb/wads-mods/71767-i...ilter-rc1/