old_contents: from __future__ import absolute_import
  
  from ..layer import Layer
  
  
  def color_category_layer(source, value, top=11, palette='bold', title='', othersLabel='Others'):
      return Layer(
          source,
          style={
              'point': {
                  'color': 'ramp(top(${0}, {1}), {2})'.format(value, top, palette)
              },
              'line': {
                  'color': 'ramp(top(${0}, {1}), {2})'.format(value, top, palette)
              },
              'polygon': {
                  'color': 'opacity(ramp(top(${0}, {1}), {2}), 0.1)'.format(value, top, palette)
              }
          },
          popup={
              'hover': {
                  'label': title or value,
                  'value': '$' + value
              }
          },
          legend={
              'type': 'basic',
              'ramp': 'color',
              'heading': title or value,
              'description': '',
              'othersLabel': othersLabel
          }
      )
  
new_contents: from __future__ import absolute_import
  
  from ..layer import Layer
  
  
  def color_category_layer(source, value, top=11, palette='bold', title=''):
      return Layer(
          source,
          style={
              'point': {
                  'color': 'ramp(top(${0}, {1}), {2})'.format(value, top, palette)
              },
              'line': {
                  'color': 'ramp(top(${0}, {1}), {2})'.format(value, top, palette)
              },
              'polygon': {
                  'color': 'opacity(ramp(top(${0}, {1}), {2}), 0.9)'.format(value, top, palette)
              }
          },
          popup={
              'hover': {
                  'label': title or value,
                  'value': '$' + value
              }
          },
          legend={
              'type': 'basic',
              'ramp': 'color',
              'heading': title or value,
              'description': '',
              'othersLabel': 'Others'
          }
      )
  
subject: Use fixed value in the helper