How can I add a shadow border to a color swatch?

[CharlesGlass]

Hello!😀

I have white color swatches and a white backround so the swatch is hard to se.
I wonder how I can add a "shadow boarder" to the swatch so it's more visible.
May be others solutions to this problem, I take what I get😀

// Charles

[MonogramMatt]

I also have this issue...would love to find a solution.