if (ratio <= 0)
        {
            return this.legend.get(0).getColor();
        }
        if (ratio >= this.legend.size() - 1)
        {
            return this.legend.get(this.legend.size() - 1).getColor();
        }
        // Interpolate
        int floor = (int) Math.floor(ratio);
        return ColorInterpolator.interpolateColor(this.legend.get(floor).getColor(), this.legend.get(floor + 1).getColor(),
                ratio - floor);
    }

    /** {@inheritDoc} */
    @Override
    public final List<LegendEntry> getLegend()
    {
        return Collections.unmodifiableList(this.legend);
    }

    /** {@inheritDoc} */
    @Override
    public final String toString()
    {
        return "Acceleration";