title: Woocommerce: How to show Product Attribute name on title when in a category page and "filtering" products via '?pa_attribute=' on address bar
body: <p>So I have a product attribute (for ex.: color) and I can show only products inside a Category that have that attribute by using, for ex., <em>?pa_color=red</em> in the address bar, so if I go '*<a href="http://www.mysite.com/product-category/t-shirts/?pa_color=red*%27" rel="nofollow noreferrer">www.mysite.com/product-category/t-shirts/?pa_color=red*'</a> I'll have only t-shirts that have the color red as an attribute. That works.<br>
  The problem is, when I do that &quot;filtering&quot;, the page title (above the product listing) still says only <em>&quot;T-Shirts&quot;</em>, it does not specify that it's only showing Red T-shirts and it might confuse clients. What I need is for it to show something like <em>&quot;T-shirts (Color:Red)&quot;</em>.<br>
  I know I can use sidebar widgets to filter attributes and then the widget will show what is being filtered but in this specific case is a very minimal design without sidebar or any filtering, I need it to show in the title.</p>