_C_o_l_o_r _P_a_l_e_t_t_e_s
	
	     heat.colors(n)
	     topo.colors(n)
	
	_A_r_g_u_m_e_n_t_s:
	
	            n: the number colors in the palette.
	
	_D_e_s_c_r_i_p_t_i_o_n:
	
	     These functions create a palette of colors which can be
	     used as input to functions such as image and contour.
	
	_S_e_e _A_l_s_o:
	
	     rainbow, rgb, hsv, gray.