code: def plot_phens_blits(phen_grid, patches, **kwargs):
      
  
      denom, palette = get_kwargs(phen_grid, kwargs)
      grid = color_grid(phen_grid, palette, denom)
  
      for i in range(len(grid)):
          for j in range(len(grid[i])):
              curr_patch = patches[i * len(grid[i]) + j]
              if grid[i][j] == -1:
                  curr_patch.set_visible(False)
              else:
                  curr_patch.set_facecolor(grid[i][j])
                  curr_patch.set_visible(True)
  
      return patches
docs: A version of plot_phens designed to be used in animations. Takes a 2D array
      of phenotypes and a list of matplotlib patch objects that have already
      been added to the current axes and recolors the patches based on the array.