I've listed chinese characters for color in groups according to their Mandarin tones.
Words for color that begin with a first tone character are listed first, followed by second tone, third tone and finally fourth tone.
I did this for students of Chinese who have difficulty remembering tones. I thought that by arranging them in groups according to the tone of the first symbole (which is the main symbol denoting color) then that could be used as a reference to make it easier to remember.
Remembering, perhaps that Brown is rather a flat color may make it easier to associate with first tone. Then associating Black, Gray and gold somehow with Brown can make it easy to remember that all of these are "first tone words".
For second tone, it might be helpful to remember that yellow is an important color in Chinese. Perhaps it signifies ascension (the emperor) and so that may make it easier to remember that the Chinese symbol for yellow is pronounced as a second tone and associating Red, Orange, Yellow and Blue (all primary or secondary colors) can make it easier to rememember that all of these are pronounced as second tone. White and silver are also second tone and here to the idea of purity or wealth could be a key to associating these colors with second tone.
Purple and pink are similiar colors and you could imaging saying the the first syllable for both words with a dropping, questioning tone.
Green is the only color I've included whose initial syllable is a fourth tone. Green is the color of trees which are rooted deep in the earth. Hence it may be easier to think of green as a downward rooting color or a fourth (dropping) tone.
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