Blank Silver DVD Inkjet printable on surface where to buy online ?it
must be silver on both side no purple or Brown most of the site have
it in purple but not in diamond silver.

You might want to check out http://www.newegg.com/

From there, use the menu on the left.  Hardware -> CD / DVD Drives &
Media.  Then click "CD/DVD R/RW Media."  Finally, at the search menu
at the top, select "Inkjet Printable" from the "Printable" selection,
and click "Search."

You should get some results.  You can then do a quick search for
"Silver" with your browser.  You should get some results; however, I'm
not sure if they are truly the DVD you'd like.  Check it out though.

I hope it helps.

The purple or blue color comes from the laser sensitive dye used in
DVD-R disks (steel gray in DVD-RW disks).
There is no such thing as a computer writable DVD with silver bottom.
Some more info on DVDs at russart.com.

http://www.americal.com/pd/702SPYSB16.html
There you go...