I would say, the plane with the double three exhaust pipes and the larger spinner , the matt aluminium/ silver. As far as the one with the six separate exhaust pipes per a side and the smaller spinner is concerned.. I'm not sure. It seems it could be of the black like for the K5099.
The matt aluminium/ silver prop
However the enlarged pic of her shows the six separate exhaust pipes and the large spinner . The prop blades are light what means the aluminium rather. But also this indicates that the prop and spinner were replaced. So they could use two different propellers. As a result the prop colour may depend on the period of time.
If you are going to make the replic of the 1937 I would say yes. But if the one from the mid of 1938 its prop should be of the aluminium...
Not sure if it is the K7555 or K5099 but the prop was of the black. See below. The spinner should be the smaller one and the air intake at the bottom should be shorter.
the pic source: Fairey P.4/34 Light Bomber - Destination's Journey
The one with the longer air intake under the engine cowl had the larger spinner with the prop of the matt aluminium.