Click View-Options. There is a small box on the right side of the K line in the small option icon. Click indicator line 1. The one marked A in the color option below is the default color of the indicator line. If you want to change the default color, first click on the indicator line 1, then click on the color you like, just change the color you like to have an A, and then click OK.

K line is also called Yin and Yang line, bar line, red and black line or candle line. After the stock price has been trading for a period of time, a special area or form will be formed on the chart. Different forms show different meanings. The K-line chart originated from the Tokugawa shogunate era in Japan (1603-1867). It was used by merchants in the Japanese rice market to record the market conditions and price fluctuations of the rice market. It was later introduced to the stock market and other markets because of its delicate and unique marking method. futures market. Through the K-line chart, the market conditions of each day or a certain period can be completely recorded. The three K-line combinations of insertion line, holding line and positive stimulus line are the most common classic bottoming forms.