Problem in changing color of lines based on numeric values..

Hello Matlabers!! I need to plot n straight lines for which I will be getting data from a .csv file. The data will be x1, y1, x2, y2, ppm. where ppm is the a measure of something. I need to plot all lines in a single plot with the color of the lines based on ppm value. Please help.

[Walter Roberson]

duplicates http://www.mathworks.co.uk/matlabcentral/answers/65733-how-can-i-change-color-of-a-straight-line-based-on-a-numeric-value