OMPlot - Qt::yellow has no good contrast to white

[openmodelica@…]

OMPlot / Plot uses Qt::white as canvas background.
It also uses Qt::yellow as line color.
This results in bad contrast and is can be hardly seen (at least on my display).
Therefore i suggest using a different color: somehow similar but with better contrast, might be a darker orange like #ffaa00.

​https://github.com/OpenModelica/OpenModelica/blob/6bc82f970b7d120b3abf7a14aae28de967323d7f/OMPlot/OMPlot/OMPlotGUI/Plot.cpp#L108

[Francesco Casella]

I agree, the yellow plots are very hard to see.

[Adeel Asghar]

Fixed with ​PR#7302.