Does anybody know how to do a chart like the one in the image i m uploading? the main idea is to separate scores into 4 categories (25%, 50% %75, above): poor, below average, good, very good. But to have 4 different colors in the chart and a bar for each dataitem in black. For example, Customer A has a score of 90% so the bar should reach the green level



This can be done with a combination of stacked area chart on the primary axis and column chart on the secondary axis axis.
A comprehensive step-by-step guide is on Jon Peltier's site here.