In spirit of the More Purple Links, Please article, I've added some purple color to the visited link style on the blog.
To blend in with the existing text color, I've used the color-mix() CSS function:

:root {
	--body-text-color: #454545;
	--body-visited-link-color: color-mix(in srgb, var(--body-text-color), #518 75%);
}
a:visited {
	color: var(--body-visited-link-color);
	text-decoration-color: var(--body-visited-link-color);
}