Shield 'trims' idea

The shield in game has the appearance of oak log surrounded by an iron trim. My idea is that by combining a shield + a material in the smithing table, you can change the iron trim of the shield into whatever material you put in, along with the wood of the shield. This is purely a cosmetic addition, and doesn't change the durability of the shield.

Some current ideas:

Default - Oak log base, iron trim

Gold ingot - Spruce log base, gold trim

Copper ingot - Acacia log base, copper trim

Diamond - Dark oak log base, diamond trim

Netherite ingot - Crimson stem base, netherite trim