[x3d-public] Nurbs patch coloring

[Michail Vidiassov]

Dear Andreas,

you wrote:
- Not sure if x3dom deals well with RGBA vertex colors
- Viewer capabilities and conformance are important but secondary to
design and spec. decisions.

Unless you know another magic trick to fix the RGB part or I have
missed something,
in x3dom vertex colors even on a simple Quad work differently,
depending from what corner point the quad starts:

http://media.iaas.msu.ru/x3d_RGB_test.htm

Other browsers (x_ite, Instant player, view3dscene) showed similar results.
"Somehow" looks to be the practical answer to the question of how
colors should vary across a vertex-colored square.
So worries about the way color should vary on a NURBS patch look
divorced from the current state of affairs.

Sincerely, Michail