You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: set_continuous_color.m
    path of file: ./repos/gramm/@gramm
    
    the code of the file until where you have to start completion: function obj=set_continuous_color(obj,varargin)
%set_continuous_color Force the use of a continuous color
%scheme
%

    
function obj=set_continuous_color(obj,varargin)
%set_continuous_color Force the use of a continuous color
%scheme
%
% Parameters as name,value pairs:
% 'colormap'        set continuous colormap by
%                   name: 'hot,'cool', or any built-in colormap by name
% 'LCH_colormap'    set colormap by Lightness-Chroma-Hue values
%                   using a matrix organized this way:
%                   [L_start L_end