Here is my dataframe
ISO_A3 Category Percent
0 DEU Belletristik 25.9
1 AUT Ratgeber 25.6
2 CHE Belletristik 27.7
3 USA Fiction & related items 11.0
4 PRT Mathematics & science 84.0
5 GBR Children's, Teenage & educational 18.9
I want the ISO_A3 column to indicate the corresponding category with a unique colour