DeutschGradient Filter
This tool is the software equivalent of the gradient filters placed before camera lenses. You can use it e.g. for post-editing to totally change the character of a scene by toning an unnaturally colored sky. The tool’s main setting is for the position and skewing of the gradient’s center line. To set these two things, draw a line within the picture. A color gradient is applied from this line outwards: out to nothing in one direction, and to the full target color in the other.
The Transparency sets the overall strength with which the tool is applied. All filter parameters except the position and rotation of the centerline can be saved as presets for future re-use.