Description:
	A custom choice of colors. Colors defined by the user will be applied to the datasets in order. 
	If there are more datasets than color inputs, default colors will be used.
File(s) used:
	gmx_files/intra_energies.xvg
Command:
	plotxvg -f gmx_files/intra_energies.xvg -colors green purple red -save plotxvg_tests-output/08colors.pdf -noshow
