So basically, my color correction doesn't work.

I went in-game, I made some nice color correction, clicked "save" saved it as africa.raw in the materials/correction folder and when I went into Hammer I put an entity in called color_correction or whatever, then I set the values to -1 for both Lookup falloff distances like the tutorial says then I set the lookup table filename to materials/correction/africa.raw

Then I ran the map, built cubemaps on both HDR and LDR, there are no errors in either the compile log or the console log and then....

Nothing happens

Color Correction IS enabled in my Video settings, but still nothing, and trust me I can tell that it's not working because the color correction I made is making a tremendous difference...