What is the ruling on using multi-colored henna to dye the beard, head, eyebrows, and eyelashes?

It is recommended to change gray hair with any color except black, and it is forbidden to dye it black. The chosen opinion is that it is forbidden due to the Prophet's (peace be upon him) saying: "Avoid black." The best way to change gray hair is with henna and katam, as the Prophet (peace be upon him) said: "Indeed, the best things with which you change gray hair are henna and katam."