The HUD allows you to choose 9 types, 9 colors, 4 emitting times or turn the particles off.
At first, choose color and emitting time of the particle with HUD. Then choose particle name. (light pink button of the HUD) It will start particles of your choosing color and emitting time.
You can also use voice commands on channel 99, as follows:
/99 off /99 star /99 stardust /99 cosmos /99 galaxy /99 galaxy2 /99 explosion /99 radiation /99 radiation2 /99 stream /99 white /99 pink /99 blue /99 red /99 green /99 yellow /99 cyan /99 magenta /99 rainbow
Time: /99 time VALUE - changes the length of emitting time in seconds. (default time is 0) The command will look like this: '/99 time 0' If VALUE is 0, it emits particles eternally.