+ /**
+ * Get the colour of a residue in a sequence
+ *
+ * @param showBoxes
+ * true if the viewport's Show Boxes setting is true
+ * @param shader
+ * the viewport's colour scheme
+ * @param allGroups
+ * all the groups which seq participates in
+ * @param seq
+ * the sequence containing the residue
+ * @param position
+ * the position of the residue in the sequence
+ * @param finder
+ * FeatureColourFinder for the viewport
+ * @return colour of the residue
+ */
+ public Color getResidueColour(boolean showBoxes, ResidueShaderI shader,