This post includes 3 short tutorials:
Quick apply 1-click themes
Customize 1-click theme component colors
Quickly change background color

Set the default widget background color in Bubble Cloud Settings, or move your bookmarks into an App Bubble Cloud. I show you the steps

When you import a backed up bookmark cloud, it will appear in the “Widgets&Folders” section as an “Imported bubble cloud”…

“Selective ambient mode” and “Ambient uniform color”.

You can add the week number as watch face complication (the default “Clock” complication group does not have the week number but I found a free app)

Normally the ambient (hollow bubble) icon is not themed, it is just the regular app icon put in a circle.  If this is not what you’d like, there is a workaround.

Follow the 6 steps below to get exactly this watch face style

Refer to this checklist if the status icons don’t appear on your watch face.

Here are a few things you can try: 1) Reboot the phone: often this is enough for the widgets to appear

Status Bubbles are generally not compatible with manual layouts generated with the layout designer, since the manual layout doesn’t allow for easy addition and removal of bubbles from the watch face

Starting January 9, 2019 user apps are no longer allowed to request permission to send SMS or to access call logs. Here is a workaround.

Steps to disable Android’s battery optimization for Bubble Cloud

Basic usage tips for Bubble Cloud for phones and tablets

On LCD screen watches you can set the ambient mode look the same as the active watch face

Google Play Store on the watch prompts you to purchase again? Here is what you can do

Using Bubble Clouds as the watch face – this is where Bubble Cloud can show its full power!
 
Full feature list – with links to help
 
Active / inactive / ambient modes – explained
 
How to show notifications?

You can assign the timer to a hardware button push, then disable the app drawer. The button will string bring up the timer!