I don't know how you make your own theme but I use photoshop with my teamplate.
And I use mTC (myThemeCreator) do applie the color and the previews.
So here's my teamplate with all the layer and the slices to save all the part of the theme.
They are correctly named to fit mTC name.
I usually make the standby screen in another file.
Because when it's animated, there is too much layers and frames.
Download here (teamplate_v01.psd)
And I'm waiting for your feedbacks & bug's report !