@shaping,
As of now, risingColor and fallingColor are used to fill the body of candlestick chart whereas border of the body and the color of wick can be controlled by color property of dataSeries. To make entire body and wick to have same color, you can set color property of dataPoint. Please take a look at this JSFiddle for an example which shows customizing the entire candlestick to be single color based on their values.
Thanks for sharing the use-case, we will reconsider this behavior in future versions.
—
Vishwas R
Team CanvasJS