OT: coloured text?

[Hans <hans.ullrich@loop.de>]

Hi folks, 

just a short question, please allow me to ask: 

How can I get coloured text output in a shell script? 

I am using:

echo "my text bla"

As far as I read and understood, this is not possible in every shell. I found 
nothing in bash manual for example.

Debian is using "dash" and not "bash", if I am correct, and with using the 
shebang line :!/bin/sh it is using dash, am I correct?

If I want coloured text, which shell do I have to use and what is the syntax 
then within the shell script?

I searched the web, but could not find a clear answer to this.

Thanks for a short answer.

Best regards

Hans