How do I create a pie chart where

1. There is no numeric value to be plotted; only color of the cells (color can be repeated for each slice)
2. Each slice is colored depending on conditional formatting (colors) in the aforementioned cell. The colors in the cell can be red, yellow, or green but will change from project to project. Right now I am coloring the cell amateurishly by typing red and formatting the font and cell fill as red (so you can't see the text in the cell). The X-values are for example:

Formulation
Process
Quality


Thank you!