I did a bunch of further experimentation and was gonna post a bunch of comparisons, but I decided to just post this result instead. Granted that I just quickly chose some yellowish colours at random, you may be interested in this, which was accomplished with a combination of material settings ands a specular spotlight. A lot of different things can be accomplished by experimenting with specular colours.

I don't think it matters in this context, but I should note that I rolled back to SR2.

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3