Teens' favourite colours

Mr and Mrs Tan have five children: Alfred, Brenda, Charles, Darius, and Eric who are 18, 17, 16, 15 and 14 (not in this order). Each of the five has a distinct favorite color from the list (blue, green, yellow, orange, red), not necessarily in the same order.

• Eric is younger than Alfred, with one of them liking yellow.

• The 17-year-old likes blue and has an elder brother, Charles.

• The orange lover and Brenda are two years apart.

• Darius is a year older than the red lover who is in turn a year older than the green lover.

What is Alfred's favourite colour?