If you a bored,try this theme
Hardware E-Commerce multi page responsive theme
Hide Website Header Footer
Odoo 11 Light Materials Backend
Odoo 11 Light Materials Backend for Enterprise
If want more space, use this theme
If you like blue,try this backend theme
Manon: A clean elegant user interface designed for Odoo administrative interface.
Fully Responsive, Customized & Flexible theme. Suitable for any business sector and companies. Start building your own website with Mercury Theme.
Clean & Modern Multipurpose Theme
Minn Business Theme
One of the best backend theme available for Odoo with extensive change in look & feel
Elegant Module for Website Shop
Customised POS Interface, Works with and without Restaurant module.
Portfolio Website