Colour pencils are seen at the Viarco factory in Sao Joao da Madeira, northern Portugal April 10, 2007. Viarco, a century-old pencil factory in Portugal, struggling to keep up with today's needs, says it has invented a new type of paint from the graphite used in pencils that may change the way artists work. Picture taken April 10. REUTERS/Nacho Doce (PORTUGAL)