I've got type errors and no animation of certain Const parameters.
Please, have a look. My comments are in the file.

don't use .xyzw or .rgba with colors type in scripts

the correct syntax is :

color0 = [r, g, b, a];
where rgba are float values from 0.0 to 1.0.

so to animate the blue channel you can do something like that :

b:float = sin(time*16);
color0 = [0, 0, b, 0];

Hmmm... I see, but imho it doesn't fit the general wz4 scripting convention. Why is that?
Have you checked alpha channel anim? Does it work the way you showed above?

No.. Alpha anim is not working.

it is fixed
the shader didn't support the alpha channel if const source was set to colors in ModMisc (now ModMtrlEnv).

Many thanks. What a relief!