I'd like to ask about use of an article before the noun 'trim' when 'trim' means: "material that is used to decorate clothes, furniture, cars, etc., especially along the edges, by being a different color, etc". That is from Oxford Advanced Learner's Dictionary.
And also from the dictionary there are example sentences as below.
The car is available with black or red trim.
a blue jacket with a white trim
The kitchen units comes in white with a grey trim
I am wondering why there's no article in the first one and there is one in the rest ones. Doesn't it matter whether there is an article or not for all the sentences?
Thank you. Any explanation will be appreciated.