Yes I can ee that, but check the html code with your internet browser dev tools,
The reason why it works there and not here, is not clear and undetermined.
if I try to replicate the html is give that : ( no color only the bold is working as bbcode-b is defined into the final stylesheet )
on the linked post the final html look like that :
<p dir="ltr">
<font size="3" dir="ltr"><font color="#0099FF" dir="ltr">
<span class="bbcode-b" dir="ltr">Thanks aurick! </span>
</font></font>
</p>
here the code looks like that :
<p dir="ltr">
<span class="bbcode-b" dir="ltr">[COLOR=#0099FF]blue text[/COLOR]</span>
</p>
My conclusion is it’s hard to know what is cooked by discourse for the post content, there might be some checks and sanitizing process done using PHP, I am trying to reuse the current css and htlm to use colored text but at the moment in vain.
Nicolas