Just working on some small data with transformations, and trying to join all the points in the data to create a triangle. I have been successful in some regard, but can’t seem to figure out the last bit.

I am trying to highlight specifc bars in a barplot using ggplot. My end goal would be to have the three bars highlighted in different colors, for example blue, red, orange and I would like to keep the remaining bars lightgreen.

I have created a table of beta coefficients from three models. The models are estimating selection for different landcover types and differ only by time period. How can I create a figure that looks similar to this . Orange and green represent the different landcover types.