did his eyes fr change color or am i js color blind

The imae are supposed to have red eyes when named. So I was confused as well why they stayed purple. Few months ago, I read some comments that said both princes name him, so not just the nice brother, the tyrant as well. Idk if that is true or not though. If it is, it might explain why his eyes are still purple. BUT if that’s not the case then I think the artist just forgot to give him red eyes.