Anyone know what RGB numbers for the transparent colour for the bif palette?

The closest seems to be 0 128 0 but it doens't work unless I'm pasting it into an existing bif. The problem is that the rest of the colours I paste in don't fit the existing bif palette and colours end up being screwy.

On another note is there a name for the palette scheme that bif recognizes?(ie. pantone,tru match, windows etc) It seems some indexed colours are recognized and others aren't.

I use photoshop & windows xp paint editor with readbif 2.2b.

I tried using search to find the answer to this... no dice