class_docstr: Generic abstract class for the graphers
class_docstr_tok: ["Generic","abstract","class","for","the","graphers"]
code: def set_colors(self, bg_color, color_scheme):
      self.bg_color = bg_color
      self.color_color_scheme = color_scheme
  
imports: import math
  import numpy
  from timeside.core import Processor, implements, interfacedoc, abstract
  from timeside.core.processor import FixedSizeInputAdapter
  from timeside.core.api import IGrapher
  from timeside.plugins.grapher.utils import smooth, im_watermark, normalize
  import timeside.plugins.analyzer
label_desc: Use image node_id 4 for calling the Grapher obj's underlying member method code with example usage: obj.set_colors(bg_color, color_scheme) without return types