I saw an other mod have this but i think it would be neat for some shiny/reflective blocks or items to have a particle effect around them when exposed to a certain amount of light. Here's an example :

The mod "Visuality" already does this.

The mod "Visuality" already does this.

yeah but it would be nice to have all of those things in one mod

already exists in another mod and would be a pain to do any better - I'll take the liberty to close this one