My absolute favorite color is blue. It is one of the primary colors in painting and traditional color theory.
I like blue also, i wore it often as a child, but at the present time my favorite color is green.
Green is the color between yellow and blue on the visible spectrum. I like it too.
Now that you mention yellow, that was Vincent Van Gogh's favorite color.  He used it extensively in his paintings.
Portraits by Vincent van Gogh
Vincent van Gogh lived during the Impressionist era. With the development of photography, painters and artists turned to conveying the feeling and ideas behind people, places, and things rather than trying to imitate their physical forms. Impressionist artists did this by emphasizing certain hues, using vigorous brushstrokes, and paying attention to highlighting. Vincent van Gogh implemented this ideology to pursue his goal of depicting his own feelings toward and involvement with his subjects. Van Gogh's portraiture focuses on color and brushstrokes to demonstrate their
Green
Green is the color between blue and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495570 nm. In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and blue, or yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. By far