[![enter image description here][1]][1]


There are many solutions possible. Here is one implemented using MOSFETs.
In your schematic, I assume D3 is yellow. If VCC is sufficiently high, it will be always ON irrespective of S1, S2 and there will be very high current through Q1 because there is no resistor to limit the current. 

Edit: The high current through Q1 is if switch S1 is also ON. 

One advantage of the scheme proposed here is that there is minimal wastage of current.



  [1]: https://i.sstatic.net/0GFfP.png