"Priza și întrerupătorul sunt de aceeași culoare."

Translation: The socket and the switch have the same color.

[Lacusta]

'are the same colour' not 'have'

[iaedwards]

Lacusta is absolutely correct idiomatically.

[Pop60]

The literal and idiomatic translation is: "are the same colour" (whichever way you spell colour). Don't know who introduced have as the preferred answer, but while it might, marginally, be acceptable, it is hugely less natural or correct.

[nahuatl1939]

for those of you who are starting to learn french : la prise et l'interrupteur sont de la meme couleur.

[GrantHanha]

I really wanted to answer " the socket and the switch are of the same colour " but I feared getting it wrong , so I went with "are"