Hi, thanks for testing.
To be clear to me, you were able to run the .neo file? I am asking cause I previously had a .neo file up that was made differently and a user reported that it was not working.

From what you are saying for the colors I guess that the problem comes from the convertion tools used from NGDK.
Good news is that those tools were writen by the same person who wrote NGDK so probably he will be able to fix them.
Bad news are that he does not have a NeoSd to make tests.

I will inform him of your report.

Sound is already added thanks to your answer in the thread of your NGFX SoundBuilder, I just have not uploaded this yet. (Hope to uploaded this with sound and without the green).

By the way NGDK is so good that I believe it have the potential to change the course of the NeoGeo homebrew scene.