a creeper in a cave lit by lava The mod adds colored lighting to the game. Other mods that add colored lights can use it as a dependency.

Warning

The mod is not compatible with Sodium!

Features

Different blocks can emit different colors
Light that passes through stained glass is also colored
Emitted colors, and filtered colors can be customized in resource packs
The mod is client side - you can play with it on any server and you won't have any problems removing it from your world

Resource Pack Tutorial

In your resourcepack's namespace folder (where folders like textures and models are located) create a light folder. There, you can create an emitters.json file, which defines what light colors blocks emit. Example:
assets\example\light\emitters.json

{
    "minecraft:torch": "#00FF00", // color in hex
    "minecraft:red_candle": "red", // dye name
    "minecraft:redstone_lamp": [ 0, 255, 255 ],
    "minecraft:soul_torch": "purple;5", // override light level emission
    "minecraft:oak_leaves": "light_blue;F" // value after ';' is a hex number from 0 to F
}

You can also create filters.json, where you define what light color passes through a given block. Example:
assets\example\light\filters.json

{
    "minecraft:red_stained_glass": "#00FF00", // color in hex
    "minecraft:green_stained_glass": "red", // dye name
    "minecraft:glass": [ 0, 255, 255 ]
}