Emotional Crayons

I am so keenly aware of my own emotions and all the myriad fluctuations.  We have names such as "anger," "depression," "felicity," and "excitement" to describe how we feel, but it seems to me that those words are the equivalent of the 8 colors found in  the basic Crayola crayon box.  There are so many more shades and nuances and I believe that is why I sometimes struggle with properly expressing myself.