The Item View highlights production orders for items that you want to visually stand out. For that reason, you can define a default item color in the color setup and item-specific colors on the item card.
The Item View is useful if you have certain items that require a specific attention. This could e.g. be items for production orders that are very time-sensitive. Or it could be items where the cost of material are very high.
You then can apply the Item View in two ways:
Important to know: the item color is applied to an entire production order (line).
The below screenshot shows a production schedule with the Item View applied. The following settings are used: