+ * Returns a colour scheme for the given name, with which the given data may
+ * be coloured. The name is not case-sensitive, and may be one of
+ * <ul>
+ * <li>Clustal</li>
+ * <li>Blosum62</li>
+ * <li>% Identity</li>
+ * <li>Hydrophobic</li>
+ * <li>Zappo</li>
+ * <li>Taylor</li>
+ * <li>Helix Propensity</li>
+ * <li>Strand Propensity</li>
+ * <li>Turn Propensity</li>
+ * <li>Buried Index</li>
+ * <li>Nucleotide</li>
+ * <li>Purine/Pyrimidine</li>
+ * <li>T-Coffee Scores</li>
+ * <li>RNA Helices</li>
+ * <li>User Defined</li>
+ * <li>an AWT colour name e.g. red</li>
+ * <li>an AWT hex rgb colour e.g. ff2288</li>
+ * <li>residue colours list e.g. D,E=red;K,R,H=0022FF;c=yellow</li>
+ * </ul>
+ * If none of these formats is matched, the string is converted to a colour
+ * using a hashing algorithm. For name "None", returns null.