If want more space, use this theme
If you like colors,buy this theme
If you a bored,try this theme
If you like blue,try this backend theme
One of the best backend theme available for Odoo with extensive change in look & feel
Customizable Backend Theme Based on Material Design
Odoo 10.0 community backend theme
Odoo 10 Fabric Theme
Odoo + AdminLTE + LOVE = CooLTEve