How do i change my Section/Categoty/ Module Title Color in joomla

Pls i need your help fast. I have search every where in my template folder. yet i could not find where to chamge and modify Section/Category/ Module Title Colour which it default colour now is Black to another color i wish like Red.

Pls help me to solve.

In the Category like , Blog , Commentry, Consumer Affairs on the left hand side.

and Some at the right hand. and Economic Outlook and Articles & feature.

These are the Section and category i created while some of them is done by Module.

so i want the Category/Section and Module Title colour change to Red

I have attache some screen shot here. this is my site www.bestofbsuinessonline.biz