Rewriting this post in hopes that people actually read it and understand what's going on.
Bellow is a link to a download for an overlay program that can leave a dot on your screen in any color of your choosing. (trust me large crosshairs get ugly fast). It wont move to flinch or anything, but at least you get a better idea of where you're aiming.
I'm leaving this here because the "[u]Color Blind[/u]" and "[u]Change Reticle Color[/u]" settings [u]DO NOT[/u] effect [u]ADS RETICLE[/u] colors at all. This makes the game unnecessarily challenging for those that are color blind.
[url]http://customdesktoplogo.wikidot.com/download[/url]
For adding a custom dot to screen
A program ive moved on to, which allows for in depth color editing for the color blind. Ive got a heavy preference for this as it doesn't ruin the depth of gameplay, and allows me to play the game in a way I can see everything clearly :)
https://www.youtube.com/watch?v=bZFlLyYppVk
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Before you comment saying that "but its already in game" I heavily suggest that you go in game, and check all of the color mode options available to you.
[i][u]Test, Before you suggest[/u][/i]
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If a Moderator could properly tag this, i would really appreciate that.
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Options>Accessibility>Colorblind Options