Rise Above diagram confusion

Hey! I have a question about a diagram in the manual. This diagram shows that orange is horizontal, purple is vertical, and blue is diagonal. However, in the video it shows that blue can also go in the vertical or horizontal directions. Is this possible?

The colors used in that image are unrelated to riser color. Any row can be completed by any color riser.

The lines were just colored teal, orange, and purple to see them easier. Any color can make a completed row: vertically, horizontally, or diagonally. (Basically what @holbrook said).