Lighting Questions

So, I am making my resource pack to be used with shaders, and this made me think about how lighting blocks work, and if I can somehow change the lighting properties for a resource pack?



Such as, can I make it where instead of a torch or flame putting off a steady glow, I could have the glow flickers as the torch animation flickers.



Also I was wondering how changing a texture of glowstone works. and do I have to do anything special if I change the glowstone texture?



Thanks