206 Injectors - Interchangeability ?

[V8RX7]

My daughters 206 is misfiring again, I suspect the injectors, having changed one in the past.

Looking on Ebay 206 1.4 8v seem to have been fitted with a variety of different looking / colour injectors - I presume they are fully interchangeable just different manufacturers ?

The reason I fancy trying different ones is that the current (fully plastic beige ones) haven't exactly been reliable.

[V8RX7]

I took a chance and bought a set from a later 1.4 - all fitted and seems fine but I'll keep an eye on the mpg