Change color of blockquote

Is there a way to change the background color scheme of the blockquotes? It is dark right now and would like to lighten it up… You can see what I am speaking of here:

http://69.89.31.90/~helpdeu8/showcase/

Hi,

Put the code below into Customize > Additional CSS:

.hentry blockquote {
    background-color: grey;
}

Regards,
Awan