I hate to be a bearer of bad news but it's never going to end (in my opinion). Have you seen a group of say, 5 year old girls playing and there's a really lightskin one among them? Have you watched how these other kids and even adults treat the lightskin one?
The internalised white supremacy is already deepseethed from a young age and everyone, dark or fair sticks with the cards they're played or try to change their perception of themselves/others or even skin colour.
On a positive note, we can teach little kids that every skin is beautiful and normal by first showing we're not colorist ourselves. It won't eradicate colorism completely but there'd be less shitheads in the world.
And this right here is my fear.