Yes, I exaggerated the color, but it was merely to illustrate what I was trying to say. If you may remember from school science class, what is known as "white light" actually consists of all the colors of the spectrum that we can see. At sunset, what is known as the the higher frequency colors, greens, blues and purples, are filtered out of the sunlight.
A digital camera's "auto white balance" will compensate for this (to a certain degree), as it's striving to give you "white whites", gray grays", etc. In other words, a neutral color balance. Normally this is what you want, but in a sunset setting you COULD opt for the warm color of the filtered light of that time of the day in your photos.
One way to accomplish this with simple digital camera is to manually set the white balance to a fixed setting, in this case "daylight", usually indicated by a sun symbol. This setting is optimized for midday sun where there is a balanced distribution of the colors in the sun's "white light". Using this setting at sunset will create the warm, late sun colors of that time of day.
If you are curious to try this sometime, don't forget to set the white balance back to "auto" when you're done so you get balanced color shots in your normal shooting.
But anyway, nice pics.