Inert legend description with color swatches consumed by Legended (produced by PeriodicTablePlot property coloring)
SwatchLegend[{col1, …}, {lbl1, …}]
SwatchLegend[{col1, …}, Automatic]
SwatchLegend[{lbl1, …}]
Plot[{Sin[x], Cos[x]}, {x, 0, 5}, PlotLegends -> SwatchLegend["Expressions"]]
→ -Graphics-- LabelStyle — default Automatic
- LegendFunction — default Identity
- LegendLabel — default None
- LegendLayout — default Automatic
- LegendMargins — default Automatic
- LegendMarkers — default Automatic
- LegendMarkerSize — default Automatic