SegaXtreme

I have almost every UK/Euro Saturn game and I am considering buying a few Brazilian Sega Saturn Tec Toy games to add to my collection, but I just wanted to know if they will play on my PAL console. I read on a previous link that they are the same as the US games, i.e. NTSC, but with PAL-M colours. I was also told by a Brazilian supplier that they where not coded and so should play fine on any Saturn console, so I am a little confused.

Also does anyone know what PAL-M colours are, and does this affect the games if played on a UK,US or Jap console?

Lastly, does anyone know where I can find a list of all Brazilian Saturn releases?

Any help would be very much appreciated.