darkd3.com
It increase the sharpness of all the textures in the game. It is unbannable because it does not memory edit, it simply creates a custom directx on your computer. Imagine the different layers on photoshop, its essentially just a layer ontop of the game!
Here are some screenshots: (p.s i'm using the hardcore setting, there are 5 settings and hardcore is the darkest. If you do not want it this dark, that is fine! The website lets you try out the various filters ontop of screenshots so you can decide which one you want. It is absolutely free!)
Before:
https://i.imgur.com/ZQYrb.jpg
After:
https://i.imgur.com/GGUPh.jpg
This is an Act 2 comparison because the website only shows Act 1 comparison and it is much harder to tell through Act 1.
They have also released a new function that changes item text on the ground to the same text used in D2. (A preview is available on the website.)
It is easily toggled on and off by pressing the pause break button (near scroll lock and print screen.)
Have fun!