All the available themes for SpinUp are here. You can have a preview here and choose your preferred one. The code under each theme is needed to activate it into the app.
If the code results invalid, you must update SpinUp.
SpinUpOriginal Red – CODE: 8484
SpinUpOriginal Black – CODE: 6969
SpinUpOriginal White – CODE: 9696
SpinUp UK flag – CODE: 4951
American Flag – CODE: 1776
Brazilian Flag – CODE: 1822