Matching springs with color change

They show a single green feather duster and an empty tube. The duster is pushed into the tube, and upon pulling it out, you can see that it has turned orange. It is pushed back into the tube, and upon pulling it out again, you can see that it has turned three different colors (red, white, and yellow). It is pushed in one last time, and upon pulling it out, you can see that the duster has turned green again.

• Easy to perform, very entertaining for the audience.
• The feather duster is 47 cm long. The tube is made of metal.