Question Changing lighting based on scrolling perlin noise

the idea that i have is to change the lighting of a sprite based on scrolling perlin noise, to make it look like clouds are floating past casting a shadow.
i know i can sort of do this with sprite lights however i would prefer not to make an animation that changes the sprite of that, and make like 100 sprites with scrolling perlin noise,
if there is a way i can mathematically have perlin noise change the light level of a sprite then that would be great but i really dont know how. ik i can render Perlin noise to a quad probably but how would i code that to effect lights

PS: its the same effect as rainworlds ambient lighting

you can see some areas are lit orange and this scrolls ingame,

 

My rough idea would be to use Shader Graph to have a procdural noise generator (Procedural Nodes | Shader Graph | 6.9.2 (unity3d.com)) and have the lighting effect multiplied by the current Perlin-Noise position and the brightness reduced by the amount. So basically replace your default shader with a shader that has clouds integrated.

 

How about just using cloud textures and using some additive shader that has a darkening effect? Then animate these to float past your view.

 

oh good idea