In the third couple, I used the color Blue, starting from the expression "Blue Monday". In the first picture, there's a putto, that even if able to use that instrument in the right way by blowing in it, is now using it as a cane; While in the second one, Blue is used to enhance the springs, very useful mechanical objects, now used to let two apparently useless rocks rest. I relate those pictures to the expression "Blue Monday" because, as in those pictures these tools are used improperly, as during any "Blue Monday" we use our mind in the wrong way, because we forget that sadness or "the blue feeling", is just a result of the inappropriate way to use our tool, our mind.