What I have found is that there are a lot of lines like this:

glPolygonMode faceFront, pgmFILL

No reference is made to pgmFILL as a routine in the source code, and after some searching I have found that it is part of the Open GL library system.
Many of the calls and parameters are from this, and as a result they may be built in. I have no knowledge of this area at all.

http://www.opengl.org/sdk/docs/man/xhtml/glPolygonMode.xml

I am trying to find where the fill colour comes from.

Jel

Hi Tony.

Thanks for your time on this problem, I wish I was able to look around the web to see what info I could find.

But my chest is very painful lying on my side, which is the only way I can see my monitor. I can't see myself getting better very fast.

Do not worry John, just get better.

There are a number of colour settings like this, and glColor3f seems to be the only type used:

glColor3f 1#, 0#, 0#

Three floating point values for R,G,B and they are used for filling polygons, such as when an element is selected and it appears red.
I have done a few experiments with it. However, I suspect that in the case of a coloured polygon the program cannot translate the colour value from the file (in the colour box) into something meaningful in terms of display.

Tony

I might be going into hospital tomorrow, so If I loose contact, you'll know why.