It would be helpful if within the Inventory app, a colour could be attributed to items. This would be helpful to search/find items within a list - the user grouping similar items with the same colour for example.

If selling BMW cars, All 1 Series could be blue, 2 Series = Red, 3 Series = Yellow etc. Colour management tool for items - user defined. These should then be available as a mappable field to all other apps that share items with the Inventory app (books, CRM etc...).