winter/modules/cms/controllers/themeoptions/config_form.yaml

# ===================================
#  Form Behavior Config
# ===================================

# Record name
name: cms::lang.theme.theme_label

# Fields are defined by extension
form: []

# Model Class name
modelClass: Cms\Models\ThemeData

# Default redirect location
defaultRedirect: cms/themes

# Update page
update:
    title: cms::lang.theme.customize_theme
    redirect: cms/themes
    redirectClose: cms/themes