On the primary hosts, gooseberry and blackcurrant, the wingless apterae are bright shiny green.  Winged adults have black markings on  abdomen. On the secondary host (plant in Daisy family, Asteraceae, including Lettuce) apterae can be green, pink or yellow.

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https://influentialpoints.com/Gallery/Nasonovia_ribisnigri_Currant-lettuce_aphid.htm