ggcorrplot.mixed: labels on outside instead of inside

[ayeshagrr]

I would like the labels to be on the outside when visualizing the mixed correlation plots rather than being placed in the middle as it can be illegible. I also would like to be able to overlay asterisks on the r values which is currently not possible (another post highlighted this issue). Was also wondering if it's possible to change the color of the "number" text as it also can be difficult for reading.

Thank you for creating such a useful package!