Good afternoon, could not find the answer to one question, whether it is possible to create certain templates of background settings, color, stroke, thickness, etc. For quick use

For example, I have certain shapes that I gradually create, and after creating a single click I want to apply a certain background color to them, the stroke type is its thickness and color

Hi.

For background settings you can use the document properties panel (Ctrl+Shift+D). If wanting those custom settings default instead, you need to overwrite svg template file located somewhere in your user/config folder (make a backup as well) -or in inkscape/share/templates.
You can add layers etc. into that.

For a number of predefined colours, create a custom swatch palette. Check if Ragnar's extension still works with 0.92-look up swap palette extension in the forum.

For cusrom fill&stroke attributes, set them default and store them with the tool you are using in the settings (Shift+Ctrl+P).

Another hint: you can copy the style of an object and paste onto another:
1. Select object with good style
2. Hit Ctrl+C or select 'Copy'
3. Select object to change
4. Hit Ctrl+Shift+V to paste the style