I have a txt file added like a layer to QGIS 3.4.2. File number 1. It is an attribute table.
I have a shapefile (a map) added to QGIS 3.4.2. This shapefile has all the countries of the world.
Both files are joined by a key field.
In the file number 1 I have a list of countries:
Key file - Name country - Color
1 - Canada - #000000 2 - US - #FFCC00
How can I change the background of all the countries of the map with the field "color" of every country?