update your xml, as you have added your fields in product.specification object so you have to define that in model. and inherit product.product in your object means you can get access to all those fields of product.product in your product.specification object.
<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>
<record model="ir.ui.view" id="product_specification_product">
<field name="name">product.specification</field>
<field name="model">product.specification</field>
<field name="arch" type="xml">
<form string="Create Product Specification" version="7.0">
<field name="prototype" />
<field name="style"/>
<field name="customer"/>
<field name="body_type" />
<field name="program_brand"/>
<field name="color_asstmnt"/>
<field name="size_info" />
<field name="description"/>
<field name="designer"/>
<field name="factory"/>
<field name="pcs_hanger" />
<field name="developed_sold"/>
</form>
</field>
</record>
<record id="product_specification_product_act_window" model="ir.actions.act_window">
<field name="name">Product Specification</field>
<field name="type">ir.actions.act_window</field>
<field name="res_model">product.specification</field>
<field name="view_type">form</field>
<field name="view_id" ref="product_specification_product"/>
</record>
<menuitem id="menu_product_specification" name="Product Specification" action="product_specification_product_act_window"/>
</data>
</openerp>
Hope this will help you.