This is currently not possible. If glide allowed inserting rich text into the sign-in screen, then changing the color of the button would be possible. However, changing the location of the terms and conditions checkbox is not possible.
Hey ! Thanks for sharing your issue with the community. In order to help you get the most suitable information based on your problem, I’d recommend you to move your topic to #help-how-to category. You may use this category to ask general questions or get help with something from the community.
To answer your question, unfortunately as @Pablo_books mentioned it’s not possible to move the terms and condition location as this is in a « static » text status. Hopefully we will be able in the future to customise the sign-on page.