We did the light drawing using two torches, we waved them both around and the other person took a picture. For this you have to put you shutter speed higher the capture a still and bright image.
Colour gels:
What are color gels in photography? A colour gel or color filter (British spelling: colour gel or colour filter), also known as lighting gel or simply gel, is a transparent colored material that is used in theater, event production, photography, videography and cinematography to color light and for color correction.