What flowers change color with the weather?

Because carotene has more than 60 colors, the color can change between yellow, orange and red. The color can change between red, purple and blue because the cells of flowers contain anthocyanin, which is an organic pigment and easy to change color. As long as the temperature and pH change slightly, it will change color immediately. Morning glory has many colors, including red, blue and purple. All because of anthocyanins. If you put the red morning glory in soapy water, it will turn blue, and if you put it in hydrochloric acid, it will turn red again. In plants, there are acidic things and alkaline things. Not only does the pH value in different plants not need to be used, but even in the same plant, the pH value will change due to different light, temperature and humidity.