How would I style some table rows as light red, dark red, light green, and dark green?

[cmallonee]

One thing to note is that the stylesheet.css resource rules are applied to ALL tables in the project. If you only want this for a specific table, I highly recommend supplying a meta.domId property for your Table and supplying a unique value, then modifying the rule to only target this Table:

#myUniqueId div.tr-group:nth-child(odd) {
	filter: brightness(85%);
}