Use colon ":" in title OR use dashes "-" in Signature notes

[x61]

Hello All:

I would like to know if it is possible to use the ":" in title name. I am looking for something like this:

Topic Name: this is one topic

Looking through the doc, signature note might work, but I would like to use a dash "-" as a replacement for spaces between topic names. That is, I am ok if the output shows: ==topic-name__this-is-one-topic instead of ==topic=name__this-is-one-topic.