Boss DVD hookup? - No color

Just picked up my new 2552 yesterday

I have a rear L4200U series Toshiba - Setup & works great

Stuart gave me a Boss BV2550UA DVD player for me to install & hookup myself.

Their manual is terrible and doesn't show same the rear connections as the on-line manual.
But basically there are 4 plugs labeled:
1 AV out
2. Earphone
3 Coaxial
4 remote sensor.

I hooked the R,W,Y cable from #1 to TV
I set the TV to colorstream, only logical chaoice.
I get the DVD player but it is in black/white, no color.

I tried all the setuo choices - no change
It plays a DVD but it is not in color, sound OK.

Is the player bad?
Is there anything to be hooked to #3 Coaxial?

Hey, Keelhauler--glad to hear you made it home.  I'm the person you met in Elkhart while they were working on your solar hook-up.  I spent the night at the Elkhart Campground checking out the new 2552, and made it back to Arizona yesterday.  Sorry I can't help you with your question, but I'm sure someone will jump in.  I thought engineers could figure everything out... 

Made me go out to see if mine worked. Sliped in a DVD & she went
fine. Sorry, seems like a tech problem.