Hi Betty, You could crackle finish them or do a gradient color design. You could also give them a pop of a bright color.
Depending on how much character you want to give them you could try Unicorn Spit available at Amazon or do a painting technique with acrylics and a strainer.
Here is the Unicorn spit link:
This lady did it on a table top, but it could be adapted to a table leg:
Merry Christmas and best to you
What material are the table legs made out of? What type of a table is it, and where in the home is it used?
A picture would help us to see what you have to work with.
we painted our table legs with chalk paint in a lighter color
here are other ideas
How Should I Spice Up Table Legs? - Woodworking | Blog | Videos ...
I agree - painting them with chalk paint would make them unique. For instance, I painted the legs of the console table in my living room yellow: http://momhomeguide.com/annie-sloan-chalk-paint-table/