Wordpress theme with multiple color schemes

I am building a WP theme and want to implement multiple color schemes. I looked through different free and premium themes and found out that this feature is developed different ways there and here. What i开发者_JAVA技巧s the best practice to make multiple color schemes support in a theme?

I usually load a different style sheet for each color, based on a wordpress setting or, to lighten the load on the database, i just copy the \color_x.css over the \style.css.