Possibly the PAL version had only monochrome composite
video; I
wouldn't know. The NTSC version definitely had color composite
video.
I know that if you do the 50Hz video mod to the Apple ][ (as mentioned
in the reference manual), the video output is no known stnadard. It's
closer to NTSC than PAL (in that there's no carrier phase switch or
anything like that), but the subcarrier frequency (IIRC) is nothing
standard.
Maybe PAL //gs's do the same sort of thing
-tony