If a lemon produces orange juice would it be call an orange even if it is yellow?
Really their both yellow juice. Lemon juice is lemon juice and orange juice is orange juice though. The color of the juice doesn't change the fruit it comes from.
...no...a lemon is a lemon. An orange is an orange.
That which produces orange juice (referring to fruit juice, not the color of the juice) is an orange, regardless of the color of the peel.
the colour orange was named after the fruit, not vice versa. so no