Sony Beta SL-F60 + Pinnacle MovieBox 510 displays black and white image

[AdamSmithee]

Hi, I am trying to capture the picture and audio from a beta tape using a Sony SL-F60 beta player, using a BNC to RCA adapter and a Pinnacle MovieBox 510 capturer, however although my TV shows the picture in color, when I use virtualdub it shows the picture only in black and white. Any solution? Thank you very much in advance