mobile

I just got my Galaxy S6, and Im somewhat disappointed with the themes available. They're all way too colorful for my taste, not to mention the majority of them are pink and pastels. The ultron one is, okay... but not what id be loking for theyre saying Im able to personalize it. In any case, Ive gone through this forum hoping theres some 3rd party developers created a vast cache of theme that work with OTA Wizhome launcher. But all Im finding is themes and icon pacs for different launchers than the default one, like Nova Launcher.
Doe anyone know where I might find a larger selection of themes? or maybe know when google will create additional themes? (Im assuming the "theme store" is a google thing.