(2019-08-08, 6:36)Alex Taylor Wrote: It's on white paper, and the spec says this should be modelled in colour-16.
That would ban the use of colour 15 (white) on the top surface of any sticker. I don't think that is correct.
https://www.ldraw.org/article/339.html
"The sticker pattern is modelled in its true colours; they are not modifiable from the outside. All printed colours of the pattern must be matched, and the background (non-printed portion) of the pattern must use colour 16. Mimicking a colour by blending in the background colour of the part underneath using colour 16 is not allowed."
I think the word "background" here is wrong. It should maybe be "backside". The text is contradictory.
I'm reading it like this:
"All colours of the topsurface must be matched, and the backside and sides (non-printed portion) of the sticker must use colour 16. Mimicking a colour by blending in the background colour of the part underneath using colour 16 is not allowed."