message: Fix 2 for ironbow.
diff: @@ -78,9 +78,9 @@ class IronbowColorMap : public ColorMap {
  size_t index = static_cast<size_t>(std::floor(new_value / increment_));
  - Color color = palette_colors_[index];/* = Color::blendTwoColors(
  + Color color = Color::blendTwoColors(
  palette_colors_[index], increment_ * (index + 1) - value,
  - palette_colors_[index + 1], value - increment_ * (index)); */
  + palette_colors_[index + 1], value - increment_ * (index));
  return color;
  }
  