title: Qt stylesheets; color fading, 2D gradient and CSS classes
body: <p>I'm having some questions about Qt's stylesheet functionality. It's really great, but it feels like the feature isn't around for too long yet, true? It's by far the easiest way to style my GUI though.</p>
  
  <ol>
  <li><p>Is it possible to add color fading in the stylesheets? Whenever the mouse hovers over a certain widget, I don't want it abruptly changing background color, just fade into the new color in 200ms or something. Is there a nice way for this, or must this be done code-wise?</p></li>
  <li><p>Can I have a 2D gradient? I know how to use the 1D gradient now, you can change colour gradually over one axis (often either horizontally or vertically). I would like to add a <em>second</em> gradient on top of that, that has a has a low alpha value for example. So if your gradient goes from green (top) to red (bottom), I would also like it to go from transparent (left) to white (right).</p></li>
  <li><p>Qt has CSS selectors for types (e.g. QPushButton) and for ID's (e.g. #mywidgetname), but I haven't found a way to select or set classes. I have a number of QFrames for example, and to a certain subset I would like to add one particular style. Should I name my frames all the same (same ID)? Sounds bad. But selecting on their type (QFrame) isn't right either...</p></li>
  </ol>
  
  <p>Thank you!</p>