Quick Look: Spacetime Theme is a custom Roku theme that lets you change the appearance of your Roku's graphical background to display the image shown in the screenshot below.
When adding this theme through your Roku device, you will be prompted to set the theme after you install it. To change the theme later, or if you've added it through the Roku website, go to [Settings] in your Roku's home screen, select [Themes], and select your desired theme.
-- Information is current as of August 29, 2018
Developer's Channel Description: Spacetime Theme
CHANNEL STORE CATEGORY: Themes
FEES: $3.99 one-time purchase