A: I'm looking for a jacket.

B: What size do you want?
A: Small. 1)
B: What color would you like?
A: Red. 2)
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1) I want small.
I want a small.
I want a small size.
I want a small-size jacket.
I want a small-sized jacket.

(Can we use all these expressions?)
Are these the full forms of 1) in the dialogue?

2) I would like red.
I want read.
I want the color red.

Does 2) in the dialogue mean these?

As for #1, the 2nd and the 4th are not as good as the other 3. However, you could hear them.

#1 they are all fine.

Sra