[old_tv_nut]

1) Agree that 200 kHz was not right, but unless the 6 mH is a misprint, there ought to be some other problem causing it
2) The bit of orange at the green-violet transition is most likely due to quadrature distortion of Q into I, especially if you are using a test pattern DVD and going in RF. It is not due to something wrong in the set itself. The distortion mechanism is that the original pattern was generated as RGB full bandwidth, then the MPEG 2 chroma channels cut this down to equiband (R-Y) and (B-Y) chroma with perhaps 1/2 luma bandwidth, so the Q channel in the signal is wider than 500 kHz and actually made by the proper proportions of (R-Y) and (B-Y). Then the IF/video detector in the set cuts off the upper sideband due to the sound trap(s), leaving some unbalanced lower Q sideband.

Also note that there is no noticeable ringing in the +/- I transitions, so the ringing in the Q transitions must be at least partly due to the Q channel filter.

I think it might be possible to improve the Q transients. The way to work on this visually is to disable the I demod so you eliminate I quadrature effects; or use a scope to look at the I and Q signals separately.