Request: Black Colored VFX

[Tala]

Hey guys and gals,

I gave it a few tries over the last 2 years but it never really worked. Other recoloring of VFX has been pretty trivial to do but black ones need a different trick (probably using Blender or something).
If anyone can make some black-colored variations of the classic VFXs like fireball explosion, lightning, magic missiles, etc. it would be super cool and I'll reward with a DM item or two.

Thanks!