Taxonomic Bar Plots for too many values

Question

[serene.s]

Hello Guys

I used MetaPhlAn3 for analyzing my metagenomic data now I want to create taxonomic stacked bar graphs at the genus level for 90 samples so that totals up the number of genera to almost 500. So I want to know if there is any R package that can take up these many values and make stacks with different colours (of cousre there wont be 500 different colors in any color palette but that should show all the genera) and in the legend key it should show only legends having top 25 abundant genera.

Thanks
Saraswati