1. Upload all contents of "Upload" folder in MyBB root
2. Go to Admin CP of MyBB and click on Templates and Style Tab
3. Click on "Import a Theme" Tab and import the Orange-theme.xml provided with this package.
4. Click on Import Theme after selecting the xml
5. Select Themes from left tab and from Controls on Right side, Set Go Dark Theme as Default.
Enjoy using Orange Flat MyBB Theme, in case of any issues contact at