How can I change the value of my plane backgrounds in Blender Grease Pencil?

Question

I want to keyframe the value to achieve the ability to change a background to a foreground in seconds. But the alpha value is the only value that you can't keyframe. At least not the way that you can with the other values. So, does anyone know how to get the same result or if the Blender team is working on a solution for this problem?

Thanks in advance

Answer 1

I just checked in Blender 3.0, and alpha values were animatable. Should be no problem to keyframe the alpha now. :)