I am 100% Familiar with your template but this will remove the color block for you:
On your site go to /templates/rt_clarion/css/ and edit your template.css file.
Line 51 controls this
#logo-color {width: 43px;height: 43px;position: absolute;left: 14px;top: 8px;}
Change it to:
/#logo-color {width: 43px;height: 43px;position: absolute;left: 14px;top: 8px;}
This will simply deactivate the CSS code causing the logo color. I am sure there is a better way but this is easy and will not afect the a spacing or layout any.
Hope this helps you.