I want to finally degoogle my life and install GrapheneOS

As the title says, I want to finally degoogle (completely) my life. I've found a Pixel 7 8/128 for ~270€ (or pixel 8? ~470€ but no white :c) it's refurbished so google doesn't get a shit from me.

I'm curious to know if:

• You can change the default icons color (black and gray-ish in the image) or is based on the wallpaper
• The camera app is good. Not going to make professional pics or videos but I still want to use it to take pics and a good quality is important. Tried their camera on a phone and the bottom menu to switch mode (picture/video/night mode/etc) was buggy
• Battery life is better/worse than stock Android (if anyone tried that)
• How the sandboxed play services work
• Anything else that I should know about. Some people say it's good, some it's bad so I'm curious to know.

I'm still looking for a good maps replacement, Organic Map is not the best because it's missing a lot of places where I live. I wish there was a google wallet Foss alternative... I needed it to use my card with the phone (rare but still possible!)

Help a new user to fully leave shitty phone companies

Edit: Does it have some kind of cross profile notifications? Can I see notifications of another profile on the main?

GrapheneOS supports forwarding notifications from users running in the background to the currently active user. Forwarding notifications to other users is disabled by default and can be enabled within each user profile where forwarding to the active profile is wanted. Notifications forwarded from other profiles are displayed by default in a standard local notification channel.

It does