Adding FillPatterns to BoxPlot

I am hoping someone have an idea of how to add different color Fill Patterns illustrated below to BoxPlot using simplest way possible. Thanks for your sharing you knowledge!

Here is an example

      load carsmall
      boxplot(MPG)
      xlabel('All Vehicles')
      ylabel('Miles per Gallon (MPG)')
      title('Miles per Gallon for All Vehicles')

Here is a sample online...