This is one thing i find rather strangely absent from LW, for many years...

Light Textures: Next to Light Color there should be a T button and not just an E button...... You could even add more T Buttons to intensity etc....
But just Light Texture would be nice.....

Texture and Gradient Shadows - Next to Shadow Color we need E and T buttons.... Would provide way more control over shadow and color,
and we could use gradients to control light falloff etc....

I think they would be uber useful, and surprised it's never been added....
I tried myself via the SDK, but unless i tried to mimic and copy LW's lights, it's impossible, not directly accessible from the SDK....