here is the issue.  i have an ecommerce site that on a category page, shows each individual color for each product sold.  and there is a distinct URL for each color.  each product page shares the same content, with the only potentially differentiating factor being customer reviews (not nearly enough of these to differentiate anything). so we have URLs like: www.domain.com/product-green www.domain.com/product-yellow www.domain.com/product-red and so on. i am looking for a way to consolidate these URL while still showing all colors on the category page.  the first solution i am considering is using the hash tag.  so we would create www.domain.com/product#green, www.domain.com/product#yellow, www.domain.com/product#red.  if possible, i would set the canonical tag as www.domain.com/product. the second solution would be to use the canonical tag and keep the URLs as is.  the issue i see here is that we would need to create www.domain.com/product and show that page somewhere.  www.domain.com/product would the URL that the above color URLs would canonicalize to. what would be the preferred solution?  or is there something else?