title: Get Tk winfo_rgb() without having a window instantiated
body: <p>I know I can call <code>Tkinter.Tk().winfo_rgb(color)</code> to get a tuple of values that represent the named color.</p>
  <p>for instance <code>Tkinter.Tk().winfo_rgb(&quot;red&quot;)</code> returns <code>(65535, 0, 0)</code></p>
  <p>The problem is it also opens a window.  I was hoping to abstract some color calculations into a generic color class, and handle whether or not the class was instantiated with <code>&quot;red&quot;</code> or <code>&quot;#ff0000&quot;</code> or maybe even some other formats.</p>
  <p>With the class abstracted, I don't have a <code>tk</code> parent to pull this info from without instantiating a new window, or passing in a parent.</p>
  <p>Is there any way to get this kind of color name → hex value conversion without having an instantiated <code>Tk</code> window?</p>