Want to have a little fun?  Go to the Opi website and click on the tab on the right hand side that says "Try It On."  You can change the hand's skin tone and nail length to match your own and then try on dozens of Opi nail polish shades.  

As a color specialist, not only did I have fun seeing the different shades on my fair skin,  I also had fun selecting a polish and then changing the skin tone to see how the nail color reacts. 

What colors do I use?  Well, I have a pink and white gel fill on my fingernails because I don't want to worry about chipped nail polish.  But I do polish my toenails.  How do I select the color?  I go to the beauty supply stores with my color fan and select colors to match either my reds or skin tones.  I purchase the polish and then take it with me to my nail salon and have them use it.  I have a range of polishes from pale to dark that I select from to match my mood at the time.