What's the plural form of cadmium yellow? Here's the word you're looking for.
Answer
The noun cadmium yellow can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be cadmium yellow.
However, in more specific contexts, the plural form can also be cadmium yellows e.g. in reference to various types of cadmium yellows
or a collection of cadmium yellows.