Auto-Titles for New Files from Excel Templates / How to set default 'Color Palette' theme

[SnakeDoctor]

I need an Excel 365 god for these...

1.) New Files Created by Opening an Excel Template

When a user opens a MS Word Template file (.dotx), a file named 'Document1.docx' will open.

However, when opening a MS Excel Template file (.xltx), the file that opens is named the same as the template, with an added '1' and as (.xlsx).

Is there a way to make a MS Excel Template open with a different file name - without re-naming the template?

2.) Changing the Default Color Palette Theme

So, MS recently pushed an update we are calling 'Aptos.' It added the 'Aptos' font, but also forced a new default color palette theme named 'Office' to replace the previous 'Office 2017-2023(?)' default template.

How do I change the Default Color Palette in Excel?



Thank you in advance!