Nucleotide("Nucleotide", NucleotideColourScheme.class),
PurinePyrimidine("Purine/Pyrimidine", PurinePyrimidineColourScheme.class),
RNAHelices("RNA Helices", RNAHelicesColour.class),
Nucleotide("Nucleotide", NucleotideColourScheme.class),
PurinePyrimidine("Purine/Pyrimidine", PurinePyrimidineColourScheme.class),
RNAHelices("RNA Helices", RNAHelicesColour.class),