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it was overlaid with a wash of lemon yellow (one of the only descriptive names) so that there was a touch of almost green as the sunset started.




Ah! The famous green last beam at sunset!

Funny thing you mention the lemon yellow. Yes, it is the only color with a descriptive name and the only kind of yellow I always advise my students notto use on lemons. A good mixing color though and in lemons tolarable if combined with a fair amount of other components.
Standard remark : 'No,a lemon is not cadmiun yellow/lemon!'
Professional deformation: Before I give a color or shade a name (if at all) I always consider what color components they are made of.