Fix wrong colors in Curves

        }

        double[] derivatives = solveSystem(points);

        int start = 0;

        int end = 256;

        if (points[0].x != 0) {

            start = (int) (points[0].x * 256);

        }

        if (points[points.length - 1].x != 1) {

            end = (int) (points[points.length - 1].x * 256);

        }

        for (int i = 0; i < start; i++) {

            curve[i] = 1.0f - points[0].y;

        }

        for (int i = start; i < 256; i++) {

        for (int i = end; i < 256; i++) {

            curve[i] = 1.0f - points[points.length - 1].y;

        }

        for (int i = start; i < end; i++) {

            ControlPoint cur = null;

            ControlPoint next = null;

            double x = i / 256.0;