How to Set Default Markup Settings for MacOS Preview.app?

I love that we can easily annotate anything that Preview can open. I use Markup all the time to annotate photos of areas inside and outside our house that we'd like a cleaner or gardener to attend to. Using Google Translate, I put notes in Spanish for them, and they appreciate it. 1000 words and all.

However, it seems that every time I do this, the background of the text box is transparent when I need it to be opaque white. The same thing seems to happen to arrows when I need to use one. They keep defaulting to transparent.

When you're annotating a lot of photos and PDFs, having to click crazily each time to change the default settings feels onerous. I'd also love to set my default for Preview to have the Markup setting open on all docs. Is that possible?

Seems like there should be some way to change the default settings. Does anyone know if that's possible, or there's a hack that might?

Or is there another 3rd party MacOS app that would do this just as easily (Adobe feels unnecessarily complex) and allow me to set these defaults?

Very obliged if anyone is able to assist here. 🙏🏼

[Running Sequoia on 2 modern M-chip Macs]