A free mod for Witcher 3, by Teiji.

With this mod you can customize all the logs in the Action Log. It offers a complete customization of all texts and colors. The customization options are very intuitive and easy to use. The entire customization can be turned on and off with one tap!

There are two different themes available: dark and light. You can also customize fonts, colors, and size.

Once you’ve installed it, you can move the “bin” folder to the root of your Witcher 3 installation folder.

After that, you can customize the entire Action Log with this mod.