You can force what would normally be a tag to print by inserting a tag in the middle of it.
For instance, [co****lor=blue]Δ[/color] will print Δ.
To do the above, I did:
For instance, [co[b][/b]lor=blue]&[b][/b]Delta;[/co[b][/b]lor] will print [co****lor=blue]Δ[/color].
You can put the [b][/b] pair anywhere in the tag, I think. Preview, preview, preview.
I prefer this way: [ will appear as a left bracket, and & will appear as an ampersand. I don’t have a good explanation as to why I think this way is better, but for one thing, if they ever change the tags, it will still work.
[color=blue]Δ[/color]
becomes
Δ
Well that was patently unhelpful. I meant to say this:
[ will appear as a left bracket, and & will appear as an ampersand.