Plurk comment background

/*-- Response box background --*/
.response_box {
	background: #ddd;
	border-top: 1px solid #000;
}

/*-- Response box individual comments --*/
.plurk_cnt {
	background: #f00 !important;
}

/*-- Response box lower area --*/
.mini_form, .info_box {
background-color: #0f0;
}

/*-- Change the text colour in your plurks (incl. comments) --*/
.text_holder {
color: #ddd;
}

a.ex_link {
color: #ff6600;
}

/*-- Default username colour --*/
.name {
color: #fff;
}

NOTES --
+ The first one defines the colour of the background of the box overall.
(the 'border-top' line defines the colour between the top plurk and the comment box below, you can remove it or change the colour)

+ The second set defines the colour of the bubbles which user comments come in.
(the !important here stops the 'new comment' animation from running its full course so that the box 'pulses')

+ The last set defines the colour of the box around the comment area you type in.
(.info_box specifically targets the bar with the 'report abuse/link' text)