I have a question for Grayface regarding the last def tool. I came across several issues with complex color creatures and I need to know how it works:

1) If the creature is repositioned the indexed bmp are automatically changed to RGB colors. Normal? (anyway I always backup the indexed so not big issues)
2) I had several issues with weird graphics, and I noticed the follow thing:

If the box "transparent" is checked BEFORE adding the first frame, I had different results than checking it after adding all frames. Sometimes my creature has weird white pixels, if the box is checked, sometimes it has same pixels if the box is not checked. In all, I need to test in both ways before making the def, and sometimes I have a surprise. I could not say why the white pixels were added, in 90% of cases the creature is ok. I guess it depends of its specific palette if need several checks up.

When you make a creature with a 0.255.255 background, do you check that box and when? Before the first frame or after the last?

I noticed that in general it is less risky to fix the desired position BEFORE going into the def tool, moving all frames may give different results.