DND
 

[highlight="Black"]contents[/highlight]

[highlight=#000000]contents[/highlight]

[highlight=rgb(0,0,0)]contents[/highlight]

[highlight=rgba(0,0,0,0)]contents[/highlight]

Ok...This is dumb...

[highlight="Black"]contents[/highlight]

[highlight=#AAAAAA]contents[/highlight]

[highlight=rgb(0,0,0)][COLOR=rgb(125,125,125);]contents[/COLOR][/highlight]

[highlight=rgba(0,0,0,0)][COLOR=rgba(0,0,0,.5)]contents[/COLOR][/highlight]

[css=background-color: #202020; border-radius: 16px; padding: 8px; font-size: 14pt; color: #ffffff]There is no limit to how much CSS you can cram in there.[/css]

[background=http://www.information-facts.com/wp-content/uploads/lights_in_darkness.jpg]contents[/background]

Just so you know, those BBcodes are nonstandard; whatever forum you learned them on had added them custom or picked up a plugin. We don't have them and largely have no intent to implement them.