The text of the weapon (when enchanted) used to kill the entity in the chat isn't blue

When a tool/weapon/amor is enchanted, the text of the item gets a light blue color. However, when the enchanted item used to kill a entity is mentioned in the chat, it does not have the blue color.

This also breaks parity with java edition.

To reproduce:

1. Enchant any weapon, rename it, and give it to a mob/zombie.

2. Get killed by the zombie, and look at the chat

Observed:

The color of the weapon in the chat is normal/white.

Expected:

The color of the weapon in the chat appears with a blue tint.

Discovered while testing MCPE-162055 and MCPE-162130.