Usually liquids only flow downwards. The spirit of the burner moved upwards in the wick: You could observe how colours also climbed up.
As long as liquid leaves at the top of the wickd, more liquid climbs up:
You can use this phenomenon to transport coloured water from one bottle to another.
What you need:  Liquemin bottle full of coloured water, 3-mL injection bottle, sticky tape, piece of tissue paper.
Experiment:
Left: 1. Place the smaller (empty!) bottle beside the Liquemin bottle.
2. Connect them by piece of sticky tape.
3. Make a long wick from the tissue paper.
4. Dip one side into the full bottle, the other one into the empty bottle.
What do you observe?  Middle and right: ........................................................................................................................
Explanation?