Sorry, you're going to have to use CSS. JSF was designed on the basis that it shouldn't have to duplicate what other systems already did better, and in the matter of formatting displays, "better" is CSS. So there is extensive CSS support in JSF, but very little in the way of brute-force display configuration.
An IDE is no substitute for an Intelligent Developer.
Thank you so much for your help and i guess i should use CSS in my code. i am new to jsf, to move forward i need to learn some basics about this technology. i am about to view values from the database and want to add some colors into the h:dataTable. so could you please explain how to implement css in my .xtml page? shall i create new .css file for that? or suggest me the best sites for that.