1, gold, blue-purple, and chestnut are the colors of bauhinia, bean flower and lilac flower reflected on the water.
2. After the above gorgeous colors appeared, I suddenly wrote trembling instead of swimming, which was related to the author's mood. Should be ups and downs of the mood, or in sharp contrast with their own sadness;
3. A white rose is a real symbol, white flame is a metaphor, white is a cool color, and the sudden appearance of white is in the bottom of my heart, which is also related to the mood at that time;
4. Scenery extract from line1-6: Lotus shade, river water, fallen leaves and ripples are mainly these four words, which shows that they have almost no vitality in life, such as the shadow of lotus, fallen leaves on trees and cool river water. All these have become emotional representations to express the negative and sad feelings of the author and poet;
It can be seen that the colors of this poem are almost all cold tones, and blue, purple and chestnut are also very cold colors. We can express our feelings through the expression of colors.
The above is my analysis of the answer, for reference only. See if you are in such a hurry, and we will correct the mistakes.