Looking for some input on a SEO situation that I'm struggling with. I guess you could say it's a usability vs Google situation. The situation is as follows:
On a specific shop (lets say it's selling t-shirts). The products are sorted as follows each t-shit have a master and x number of variants (a color).
we have a product listing in this listing all the different colors (variants) are shown. When you click one of the t-shirts (eg: blue) you get redirected to the product master, where some code on the page tells the master that it should change the color selectors to the blue color. This information the page gets from a query string in the URL.
Now I could let Google index each URL for each color, and sort it out that way. except for the fact that the text doesn't change at all. Only thing that changes is the product image and that is changed with ajax in such a way that Google, most likely, won't notice that fact. ergo producing "duplicate content" problems.
Ok! So I could sort this problem with a "rel canon" but then we are in a situation where the only thing that tells Google that we are talking about a blue t-shirt is the link to the master from the product listing.
We end up in a situation where the master is the only one getting indexed, not a problem except for when people come from google directly to the product, I have no way of telling what color the costumer is looking for and hence won't know what image to serve her.
Now I could tell my client that they have to write a unique text for each varient but with 100 of thousands of variant combinations this is not realistic ir a real good solution.
I kinda need a new idea, any input idea or brain wave would be very welcome. 