How to facilitate theme customisations in Wordpress

[theman]

I've created a Wordpress Theme that I decided to do a bit of extra development on so that it can be packaged up and deployed as a theme for anybody who wants to download and use itAs is pretty standard for Wordpress Themes, I've added an options page, where the user can customise the theme, i.e. change background colours, font-sizes, etc.Currently I'm facilitating these theme customisations by embedding the new style i.e. \[code\]<?php print "background-color: {$options['user_selected_bg_color']"}; ?>\[/code\] in the page (style tag in head)The only other way I can think of doing this is by perhaps adding a secondary stylesheet below the primary one that is actually PHP with the header mime-type change.What other ways are there to do this? Is there an "accepted" method for facilitating the users theme customisations amongst Wordpress Theme Developers?