Maybe a little more information would help out . Are you looking for someone to make the order forms & error pages blend in with your website (i.e. Take hold of the design)? Are you looking for someone to design the Admin Control Panel & Support Section to look like your website?
Please detail what all you are looking for and maybe I can help out. ViperHost used to use PHPManager before we made our own small (but quickly growing) script to manage our needs, it is in no way finished, but we did not need many of the features that PHPManager offered (invoicing & support sections being the main ones not needed).
It is not really that hard to modify to make it take hold of your websites design, as with any script, it just takes some looking over and getting used to .