Primary colours in coloured pencil are vibrant. Abstraction is just the beginning. They work on any colour in any colour. They give an immediate reward. They are portable very forgiving, engaging etc etc etc.
Learn to express your inner love of creative vibrant colour without a huge investment in stuff. Participants take home works ranging from small scale exercises to personal images.
Coloured pencils work on almost any dry surface. Their ability to depict detail makes them a good partner when detail is needed.