Aqua, Tiffany blue, turquoise, teal, and robin-egg blue are all from blue/green combinations that make up my favorite color.
My camera was set to the aperture priority setting for each of these. 1 and 3 have shallow depth of field, while 2 and 4 have deep depth of field. Minor edits were added such as slight cropping and color intensity. In the last photo I felt like the blue of the sky clashed with the teal-ish colors on the train cars, so I adjusted the sky in Photoshop to take on the blue characteristics of the spray paint. I also recolored the pipes which were originally a bright sky blue.