While not actually a BUG, I've created a bugfix for this enhancement to allow it to be tracked.
The following change will allow the WordPress TAG widget to use the Atahualpa widget link styling. Edit css.php and change lines 646-675 from

div.widget td a:link,
div.widget td a:visited,
div.widget td a:active,
div.widget ul li a:link, 
div.widget ul li a:visited, 
div.widget ul li a:active {
	text-decoration: none; 
	font-weight: normal; 
	color: #<?php echo $bfa_ata['widget_lists']['link-color']; ?>; 
	font-weight: <?php echo $bfa_ata['widget_lists']['link-weight']; ?>; 
	}

div.widget ul li ul li a:link, 
div.widget ul li ul li a:visited, 
div.widget ul li ul li a:active {
	color: #<?php echo $bfa_ata['widget_lists2']['link-color']; ?>; 
	font-weight: <?php echo $bfa_ata['widget_lists2']['link-weight']; ?>; 
	}

div.widget ul li ul li ul li a:link, 
div.widget ul li ul li ul li a:visited, 
div.widget ul li ul li ul li a:active {
	color: #<?php echo $bfa_ata['widget_lists3']['link-color']; ?>; 
	font-weight: <?php echo $bfa_ata['widget_lists3']['link-weight']; ?>; 
	}

	
div.widget ul li a:hover {
	color: #<?php echo $bfa_ata['widget_lists']['link-hover-color']; ?>; 
	}

to

div.widget a:link,
div.widget a:visited,
div.widget a:active,
div.widget td a:link,
div.widget td a:visited,
div.widget td a:active,
div.widget ul li a:link, 
div.widget ul li a:visited, 
div.widget ul li a:active {
	text-decoration: none; 
	font-weight: normal; 
	color: #<?php echo $bfa_ata['widget_lists']['link-color']; ?>; 
	font-weight: <?php echo $bfa_ata['widget_lists']['link-weight']; ?>; 
	}

div.widget ul li ul li a:link, 
div.widget ul li ul li a:visited, 
div.widget ul li ul li a:active {
	color: #<?php echo $bfa_ata['widget_lists2']['link-color']; ?>; 
	font-weight: <?php echo $bfa_ata['widget_lists2']['link-weight']; ?>; 
	}

div.widget ul li ul li ul li a:link, 
div.widget ul li ul li ul li a:visited, 
div.widget ul li ul li ul li a:active {
	color: #<?php echo $bfa_ata['widget_lists3']['link-color']; ?>; 
	font-weight: <?php echo $bfa_ata['widget_lists3']['link-weight']; ?>; 
	}

	
div.widget a:hover,
div.widget ul li a:hover {
	color: #<?php echo $bfa_ata['widget_lists']['link-hover-color']; ?>; 
	}

or you can use the attached file which has the changes already applied. Download the file, unzip it and upload it to your Atahualpa 3.6.1 theme folder.
css.php.zip

NOTE: The css.php in BUGFIX 361-04: Allow Custom Menu widget links to use same styling as Pages widget. contains the fixes from this BUGFIX

Thank you very much. Looks wonderful now!

eek! please recheck your line numbers... until 765 is incorrect, i believe it is 675.

oops, darn fumble fingers...thanks it has been corrected