First of all downloaded theme file.
Copy the theme “.Hwt ” File To SDCard In “HWtheme” Folder.
Back to home screen then open theme app on your phone.
Now go to the Offline tab, select the theme what you want to apply, then click Apply
reboot required
Huawei | honor | themes | huaweithemes | هواوي | honorthemes | hwthemes | huaweip10 | honor9 | ios | tema | download | ثيمات | خلفيات | gr3 | gr5 | p8lite | p9lite | p9 | mate8 | mate9 | Hwthemespro huaweitheme | iosthemes | galaxy | s8 | themes | dark themes