Modify an SVG file based on information in a CSV file

I've got a SVG file of the map of the US and I want to add colors to it. Because it would take me to much time, I thought I could use a bash script. I have also another file containing the states and the colors that belong to them. SVG-file: Hawaii CSV-file HI, blue What I want: Hawaii I thought I could use grep or sed but I really don't know where to begin.