Yes, I agree it is bizarre and fascinating and everything you said about traveling in various colour spaces:) Also agree "should match spec" is always a valid

Yes, I agree it is bizarre and fascinating and everything you said about traveling in various colour spaces:) Also agree "should match spec" is always a valid argument. To repeat, and be clear, my critique was about what the page says "Physically correct color gradients..". This should have been "according to spec you should compute a gradient this way, and this is what your browser does...".