The first and only color that he saw during the beginning was red. He said that it might have manifested from his angerNext was pink, the color of Prim's blush and the blooming cherry blossomsBlue, when Prim brought forget-me-nots because it reminded her of his eyesHe blacks out and temporarily becomes blindHe can finally see after waking up from a dream that same moments he became blind
Yup, that's definitely too fast. I think the manhwa ver. of the novel is changing things up a bit. But it would've been nice if they did follow the flow of the novel's story because it would have added depth into Prince Reynsis' character development on his journey to see colours. We'll just see how this will go when more chapters are released. Thanks for sharing the spoilers by the way.