2 questions on changing postions in shopping cart

I wanted to improve the look of the shopping cart. There are two things.
1. The grey bar with titles on the cart with the words "Image", "Name", "Unit Price", "Price" and "Total price" is centered in each column field. The information below is left justified. How can I either left justify the words in the gray bar or can I center the information below so that they match up better? (see the immage I sent)
2. The pop-up messages come out on the top of my web site in blue. (See the "insuufecient Brew$$ for purchase" in the immage attached) How can I change where these messages show up on the page (I'd like them closer to the next button so more visible and intuitive). Also, how can I change their color to better match my web site?

Thanks Nicolas, the title alignment left worked.
I'll discuss message position with my template maker.
Gracias