1) Is there a way to control (either programmatically or manually) the band band region so that I can set the region Rho>0.9 to red, the region Rho>0.8 to orange, and so forth? It appears that the legend that SAS uses by default when I manually set the number of 'Levels' is based on the less than sign. Can the regions be defined based on the greater than sign? For example, I would like the highest region to represent all reliabilities (Rho) > 0.9, followed by the next highest region (Rho>0.8), and so forth.
2) Can I control where the axis labels are located?
The number of band colors and their order can be control via the goptions COLORS=() option. You may be able to set the number of colors in a way to match your ranges. There is currently not a way to assign ranges to specific colors.