First, the error FENIX is getting is a syntax error... check to make sure you're opening and closing all of your quotes.
I haven't had a chance to play around with making this work in quotes, but here's what I got set up on 3.6.8 that seems to be working very well...
First, create 3 new fields via User Profile Fields -> Add New Profile Field
Field 1:
---------
Type: Single-Line Text Box
Title: Default Post Color
Description: Set the default color for your posts in hexadecimal format (e.g. #FF0000 = red). Hexadecimal color codes work like this: #[red][green][blue], with FF being the highest and 00 being the lowest. Look up hexadecimal in Wikipedia if you'd like a more in depth explanation.
Max Length: 9
Field Length: 15
Required: No
Editable: Yes
Searchable: No
Member List: No
----------
Field 2
----------
Type: Single-Selection Menu
Title: Default Post Font
Description: Set the default font for your posts.
Options:Arial
Book Antiqua
Century Gothic
Comic Sans
Courier
Courier New
Garamond
Georgia
Tahoma
Times New Roman
Verdana
[whatever else you want to add/remove, etc.]
Set Default: Yes, Including first blank...
Required: No
Editable: Yes
Searchable: No
Member List: No
----------
Field 3
----------
Type: Single-Selection Menu
Title: Default Post Font Size
Description: Select the default size of the text in your posts.
Options:9pt
10pt
12pt
13pt
[whatever else you want to add/remove, etc.]
Set Default: Yes, Including first blank...
Required: No
Editable: Yes
Searchable: No
Member List: No
-------------------------------
Take a look at User Profile Field Manager and record the field names (e.g., field5, field6, etc.) for the fields you just created.
Now replace COLOR, SIZE, and FONT in the below code with your field names.
it's bold, because it's important
-------------------------------
Find and replace in Postbit Templates -> postbit:
Code:
<div id="post_message_$post[postid]">$post[message]</div>
with
Code:
<div id="post_message_$post[postid]">
<if condition="$post['COLOR'] != ''">
<span style="color: $post[COLOR];">
</if>
<if condition="$post['FONT'] != ''">
<span style="font-family: '$post[FONT]';">
</if>
<if condition="$post['SIZE'] != ''">
<span style="font-size: $post[SIZE];">
</if>
$post[message]
<if condition="$post['SIZE'] != ''">
</span>
</if>
<if condition="$post['FONT'] != ''">
</span>
</if>
<if condition="$post['COLOR'] != ''">
</span>
</if>
</div>
-----------------------------
Find and replace in Postbit Templates -> postbit_legacy:
Code:
<div id="post_message_$post[postid]">$post[message]</div>
Code:
<div id="post_message_$post[postid]">
<if condition="$post['COLOR'] != ''">
<span style="color: $post[COLOR];">
</if>
<if condition="$post['FONT'] != ''">
<span style="font-family: '$post[FONT]';">
</if>
<if condition="$post['SIZE'] != ''">
<span style="font-size: $post[SIZE];">
</if>
$post[message]
<if condition="$post['SIZE'] != ''">
</span>
</if>
<if condition="$post['FONT'] != ''">
</span>
</if>
<if condition="$post['COLOR'] != ''">
</span>
</if>
</div>
I hope this helps... if I have time, I'll look into dropping in a color chooser and making it work in quotes.