change the color scheme from the config file

[ohnorobo]

The current color scheme is white/gray with a highlight color (purple).
https://github.com/codeforboston/finda/blob/gh-pages/styles/style.css <- every note about brand primary/accent color.

It would be cool to just have a "purple" property in the config file, and then build the needed css properties in js. This would involve being able to darken certain specified colors on the client side too.

[ohnorobo]

http://stackoverflow.com/questions/5560248/programmatically-lighten-or-darken-a-hex-color-or-rgb-and-blend-colors

http://bgrins.github.io/TinyColor/