@each is killing me, help.

each_sass

$dashboard_base:    #ff0000
$transaction_base:  #00ff00
$invoices_base:     #ffff00
$reports_base:      #0000ff
$settings_base:     #00ffff
$contacts_base:     #ff7700

$dashboard:    lighten($dashboard_base, 40%)
$transaction:  lighten($transaction_base, 37%)
$invoice:      lighten($invoices_base, 35%)
$reports:      lighten($reports_base, 45%)
$settings:     lighten($settings_base, 21%)
$contacts:     lighten($contacts_base, 27%)

$dashboard2:   lighten($dashboard_base, 39%)
$transaction2: lighten($transaction_base, 36%)
$invoice2:     lighten($invoices_base, 30%)
$reports2:     lighten($reports_base, 40%)
$settings2:    lighten($settings_base, 19%)
$contacts2:    lighten($contacts_base, 32%)

///body background
$dashboard_3:   lighten($dashboard_base, 45%)
$transaction_3: lighten($transaction_base, 43%)
$invoice_3:     lighten($invoices_base, 40%)
$reports_3:     lighten($reports_base, 47%)
$settings_3:    lighten($settings_base, 39%)
$contacts_3:    lighten($contacts_base, 42%)

@each $module in dashboard, transactions, invoices, reporting, settings, contacts 
  #theme_#{$module}
    background: $#{$module}_3 url(/images/bg_dust.png)
    #main
      table tr th
        +background-image(linear-gradient($#{$module}_2, $#{$module}_3))
      .buttons
        &.main
          +background-image(linear-gradient($#{$module}, $#{$module}_2))