Muddy yellow color in drawings

Tekla Structures
Not version-specific
Tekla Structures
Environment
Not environment-specific
Question:
When trying to fill an object within a drawing with yellow color, why is the result a muddy green/brown color, not real yellow? This also prints out as this color instead of real yellow.

Answer:
The color presentation has been like that for yellow since white background became possible in drawings (Tekla Structures 10.0). It is hard to see the real yellow if you have a white background. This is why the muddy yellow is used on white background.

But if you set the drawing background color to black (XS_BLACK_DRAWING_BACKGROUND=TRUE), the yellow lines will be displayed as real yellow.
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