[Fluxus] ribbon colour bug?

[gabor papp]

hi Kassen,

> I would expect this to give me a white line. Instead I get one that's red on
> one side and black on the other, creating the odd situation of a line that
> has two sides.  This leads me to suspect that (hint-none) isn't working here
> and that (wire-colour) isn't either.
thanks for the report. it looks like a bug. the normals were not set 
during wireframe-mode. when lighting is on, it causes strange results as 
you noticed. i disabled lighting during wireframe ribbon rendering, 
which is how it is done for wireframe polyprimitives. changes are 
committed to git.

best,
gabor