class SafePencil {
	private static final int DEFAULT_LENGTH = 10;
	private Colors color;
	private int length;

	public SafePencil(Colors color, int length) {
		this.color = color;
		this.length = DEFAULT_LENGTH;
		if (length > 0) {
			this.length = length;
		}
	}

	public String toString() {
		return (this.length + ": " + this.color);
	}

	public void setColor(Colors newColor) {
		this.color = newColor;
	}

	public void sharpen(int remove) {
		if (remove < this.length) {
			this.length -= remove;
		}
	}
}