How to define different colors for different edges?

LINE Create line LINE(X,Y) adds the line defined in vectors X and Y to the current axes. If X and Y are matrices of the same size, line draws one line per column. LINE(X,Y,Z) creates lines in three-dimensional coordinates. LINE('XData',x,'YData',y,'ZData',z,...) creates a line in the current axes using the Name,Value pairs as arguments. This is the low-level form of the line function, which does not accept matrix coordinate data as the other informal forms described above. LINE(...,Name,Value) specifies line properties using one or more Name,Value pair arguments. LINE(container,...) creates the line in the axes, group, or transform specified by container, instead of in the current axes. H = LINE(...) returns a column vector of the primitive line objects created. Execute GET(H), where H is a line object, to see a list of line object properties and their current values. Execute SET(H) to see a list of line object properties and legal property values. See also PATCH, TEXT, PLOT, PLOT3. Documentation for line doc line