Question [Q] CM Theme on Stock ROM?

Hi Forum, i don't know if this is the right section to ask, but i would like to know if there's a way to apply a custom CM Theme to a stock ROM.
I already know about HK Theme Manager Xposed module, but it only finds themes with the old CM Engine, not the newer ones.
I would like to have the Android L theme over my stock ROM, because in this moment there isn't a custom rom that satisfys me.

Thanks in advance for the answers