The colors can be gotten using the color picker tool. The colors widget (cntrl + shift +f8) allows you to view 'More' which shows the hex and rgb values also. So, just get a screen capture and paste it in Paint.net and use the color picker.
BTW, I created a Material Design Swatch that provides Material Design colors for you. https://rack.pub/swatch or on codepen at http://codepen.io/rhroyston/pen/pbPqbY.