<cfset str      = StructNew()>
<cfset str.css1 = StructNew()>
<cfset str.css2 = StructNew()>

<cfset str.css1.bgcolor = '##DEADBEEF'>
<cfset str.css1.color   = '##BEEFDEAD'>

<cfset str.css2.bgcolor = '##REEDBEEF'>
<cfset str.css2.color   = '##BEEFREED'>

<cfset propName = 'bgcolor'>
<cfset strName = 'css1'>
<cfset StructDelete(str[#strName#], #propName#)>

<cfdump var="#str#">

<cfoutput>
</cfoutput>