For anyone interested, I've modified the latest Android beta (104.20.57) APK with a Metro Blue look similar to the old WMC theme. I don't know if the Devs will leave this post up but it's here if anyone wants to try it. It goes without saying - this is an unsupported mod, use at your own risk, do not expect any support from myself or Channels.
Metro Blue Theme link:
https://app.box.com/s/6jhq33ivtolvxpzutagu660okm31hsox