fixed issues with xcolor colours not being defined

report/src/ecsgdp.cls

@@ -104,7 +104,7 @@
 \usepackage{listings}
 \usepackage{float}
 \usepackage{makecell}
-\usepackage[table]{xcolor}
+\usepackage[dvipsnames, table]{xcolor}
 \usepackage{tikz}
 \usepackage{tikz-uml}
 \usepackage[figuresright]{rotating}