Possible Clues:

• Synthetic fabric
• Bill and Cyril worked to produce fibre
• Paint: answer call with small amount of it mostly
• Textile fibre — icy Carl (anag)
• Paint tea party attendee almost eating blubber
• Give a yell when they briefly pass tongue over paint
• Edge of asphalt on shed tears -- finish off cursory coat of paint
• Synthetic fibre -paint