docstr: Return a gradient list of (n) colors between
  two colors.
code: def linear_gradient(self, finish_color, n=10):
      """Return a gradient list of (n) colors between
      two colors."""
      # Starting and ending colors in RGB form
      s = self.get_rgb()
      f = finish_color.get_rgb()
      # Initilize a list of the output colors with the starting color
      RGB_list = [s]
      # Calcuate a color at each evenly spaced value of t from 1 to n
      for t in range(1, n):
          # Interpolate RGB vector for color at the current value of t
          curr_vector = [
              (s[j] + (float(t) / (n - 1)) * (f[j] - s[j]))
              for j in range(3)
          ]
          # Add it to our list of output colors
          RGB_list.append(curr_vector)
      RGB_list = [Color(rgb=r) for r in RGB_list]
      return RGB_list
  
imports: from collections import OrderedDict
  from bokeh import palettes
  from IPython.core.display import HTML
  import yaml
  from chartify._core.options import options
  from chartify._core import colour
label_desc: Use image node_id 4 for calling the Color obj's underlying member method code with example usage: obj.linear_gradient(finish_color, n) and returns: RGB_list