我已经从 ubuntu 15.04 上的每晚 DEB 安装了新的 odoo 8 beta，就像在带有 windows EXE 的 windows 10 上一样。
我记得 odoo 8 安装了几个免费的 bootswatch 模板，您可以在 web builder 中从中选择（spacelab、amelia、cerullian 等）。我也找不到那个选项。没有提供免费主题的选择。
但我深入研究了 odoo9，发现这些免费 bootswatch 主题的文件已安装：
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/amelia
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/cerulean
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/cosmo
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/cyborg
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/flatly
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/journal
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/可读
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/simplex
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/slate
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/spacelab
/usr/lib/python2.7/dist-packages/openerp/addons/theme_bootswatch/static/src/less/united
如何启用这些主题？