How to change font/design for blockquotes please.

How can I change: 1. the font and font size used for the block quotes please. (The current one is to heavy and large). 2. the location of the quote symbol which appears at the start of a quote to the LHS (like Clean Enterprise theme) rather than the current central location. 3. the size of that quote symbol? 4. the colour of that quote symbol? Your assistance with this would be greatly appreciated !