colordef (Matlab function) Set default property values to display different color schemes

## Matlab/Scilab equivalent

Matlab | Scilab
    colordef
    No equivalent

## Particular cases

[h = ]mtlb_colordef(color_option)

  Scilab equivalent is fig = gcf();fig.background = -1;[h = fig]; if color_option is equal to "black" or "none" and fig = gcf();fig.background = -1;[h = fig]; else.

[h = ]mtlb_colordef(fig,color_option)

  Considering fig is a graphics handle, Scilab equivalent is fig.background = -1;[h = fig]; if color_option is equal to "black" or "none" and fig.background = -2;[h = fig]; else.

[h = ]mtlb_colordef('new',color_option)

  Scilab equivalent is fig=scf(max(winsid())+1);fig.background = -1;[h = fig]; if color_option is equal to "black" or "none" and fig=scf(max(winsid())+1);fig.background = -2;[h = fig]; else.