Texts Highlighted at certain time (Karaoke like for spelling storytelling)

Hi genius!

I want to make word highlight together with sound like karaoke music but this is for kid storytelling spelling. And I want to make THE simplest code as possible. SO, my idea is that i want to change text's colour at certain time and other words continue the same code setting. *i know it is not practical and stupid way.

If there any better way or you have did better or you have found site that have the code, would love if you share your knowledge.

I already search for other same question and no answer no one tell the exapmple code, doesnt anyone never did this kind of karaoke storytelling spelling book???

I want to make spelling game for short blind kids but My code skill is super bad. I help your help. Million thanks!