9 Air (AQ) took delivery of its fifth colorful aircraft at Guangzhou Baiyuan International Airport (CAN) on July 11, a brand new Boeing 737-800 with a yellow tail.

The newly introduced 737-800 aircraft, Registration B-6989, is painted with nine circles in different colors and sizes on its fuselage and the striking "9" on both its tail and wing tips. Different from 9 Air's first three aircraft, the fourth 737-800 aircraft features the same livery paint but with a different color scheme - a yellow tail, wing tips and 9 dots in matching colors.

The Guangzhou-based low-cost carrier took delivery of its first two 737-800 aircraft (Registration B-1715, B-1719) in August and September 2014, with the third one and fourth one (Registration B-1716 and B-6990) joining its fleet in February and July 2015.

Among the five 737-800s in orange, blue, violet red, green and yellow paintings, which one is your favorite?