I do have some interaction shader replacements for ETQW but I've never done any of the post effects for it. It already has a pretty good bloom solution and even though the color balancing is nothing more than simple tinting, it does the job just fine. If you want to improve the post process visuals of ETQW, you can create custom atmosphere parameters for the maps. This probably won't work for online play but it'll work for solo/private matches.
Sikkpin
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