How can I make Plot color bars thicker or more vibrant in PlotLegends?

When I use PlotLegends → “Expressions” in a multiple plot, it works okay. But the colorbars to the left that differentiate the functions are so thin I can’t always make out the different colors. Is there a way to make them thicker, or choose more vibrant colors?

Use SwatchLegend instead?

Or adjust the PlotStyle of the plot; the legend will take over these colors/thicknesses/dashing etc.

Thanks. PlotStyle worked better than SwatchLegend. Now I can gather all my fave 2D plot styles into an initialization function. “Avoid unnecessary typing.” --Manual of WolfStyle