Template:Background color

{{safesubst:#switch:

 {{safesubst:#if: 
 | {{{demospace}}}    
 | {{safesubst:#ifeq:Template|
   | main
   | other
   }} 
 }}

| main = {{#if:|{{#ifexpr:21 < 7 OR 0 < 7 AND 0 < 7|}}}} | other | #default = }}{{#switch:

 {{#if:
 | {{{demospace}}}    
 | {{#ifeq:Template|Template
   | template
   | other
   }}
 }}

| template = {{#if:|{{#ifexpr:21 < 7 OR 0 < 7 AND 0 < 7|}}}} | other | #default = }}