Indent the text in docbook

I want to indent my text in the article I am writing in docbook 5. I also need to add colors to my text. Is that possible? If so how? I tried indenting as follows but it was not visible when I took the html output of it.(Here I tried to align the text "Kerfun" to the center) I have no idea regarding the colour change. Can someone please tell me how? Where have I gone wrong?

<dbk:para text-indent="center">Kerfun</dbk:para>
   <dbk:para text-indent="center">
      <dbk:emphasis role="bold">Fadiah</dbk:emphasis>
   </dbk:para>

Solution

You haven't specified your OS or toolchain.

To format your xml: I'd suggest using the "xmllint -format" command

To validate your xml: Same command could be used to ensure your document is valid against the docbook schema

To colorize your xml: That very much depends on what editor you use. Personally I'm a fan of gvim which has XML high-lighting enabled by default.

Update

As stated I'm not a windows guy but 2 minutes of googling lead me to the following:

Notepad++ appears to have an XML plugin. Source was the following link