Hello,
I was looking here because my problem, but I don't find a solution.
I need to change the background color of a region. On the page I have 3 regions and the first region should be red.
Here is the page:

And it should be like this:

The region-template is this:
<section class="uRegion uNoHeading #REGION_CSS_CLASSES# clearfix" id="#REGION_STATIC_ID#" #REGION_ATTRIBUTES#>
<div class="uRegionHeading">
<span class="uButtonContainer">
#CLOSE##PREVIOUS##NEXT##DELETE##EDIT##CHANGE##CREATE##CREATE2##EXPAND##COPY##HELP#
</span>
</div>
<div class="uRegionContent clearfix">
#BODY#
</div>
</section>
Kind regards,
Mark