nay lines

DONE

1. randomize the bezier curve points but they have to be on the related perpenducular line
2. add the background colour
3. add grey values to the palette
4. brushstroke texture(s)
5. shadow colours and blur
6. animation of the brushstrokes

TODO

1. rotate only vertical, horizontal or by 90°degrees
2. build double line element shapes with brushstroke(s)
3. ...