Red and blue. Two colours on opposite sides. Red invokes passion, blue serenity. Ironically, it is blue that is the more energetic.
Green. The colour that exists between blue and red. A colour that seems just natural. Not only the colour of plant life, but it is the colour the human eye can most easily distinguish at night.
Yellow. The light combination of red and green. A colour that is…precious. From the Sun to gold, what other colour has been more attractive to civilization?
Brown. A colour often thought of as dull, even repulsive. And yet, it has its own grounded beauty in the right places. It’s the colour of human skin, after all.
White, the union of all light colours. To some, it is the colour of purity. To others, the colour of death. At times, it can be both.
Black, the absence of light. Often symbolic of all that is ill, but itself it is merely a void. Just as numbers need a zero, colours need a lack thereof.
And there are my personal favourites depending on mood. For cheerful times, cyan, the light combination of blue and green, radiating the best qualities of the two. For more melancholy times, purple, the rarest of colours in nature. A mysterious colour, perfect for, say, a strange little town in WordPress.