Alaska RR Color Scheme

[kovaks]

Why can't I find any HO scale Alaska RR passenger cars with the blue and yellow color scheme?  I find them in other scales, but not HO.  I find only the locomotives in the blue and yellow, and the McKinley Explorer schemes.

[upturbine]

Rivarossi made them in the blue and yellow scheme.

[kovaks]

Thanks,
How long ago did Rivarossi make them, or are they still in production?