Method of selling a product over the internet

A method of selling a product by an Internet data communication system where a vendor of a product publicizes the product by a product catalog over the Internet and a consumer finds a desired product to purchase in a product catalog displayed on a monitor of the consumer's own PC and places an order, to the vendor, for a purchase,

• said method of selling a product through an Internet data communication system comprising:
• a first step of preparing a product catalog displaying a known basic color reference image attached to an image of a sample of said product and publishing it, through the Internet, by said vendor,
• a second step of comparing a color of a digital image of said basic reference color image involved in said catalog, indicated on the monitor of said consumer's PC, to a color of said consumer's color reference being identical to said basic reference color image of said catalog by said consumer's naked eye observation,
• a third step of creating a condition that said color of the digital image of said basic color image indicated on said monitor owned by said consumer can be recognized as substantially identical to the color of said consumer's color reference, by the consumer's naked eye observation,
• a fourth step of finding a desired product by said consumer based upon the result of naked eye observation of the digital image of said product catalog indicated on said monitor of said consumer's PC under the condition created by said third step, and
• a fifth step of ordering said desired product selected in said fourth step from said vendor.