In the latest version of the web client, Baya V4, the login page is customisable from the user end.
You can change the background image to an image of your choice or a solid colour fill. You can also customise the contents of the frames around the login details. In each frame, you can display text, links, and images.
The saved changes will reflect immediately on the login page.
We encourage customising your login page outside of working hours to ensure that you get enough time to try all the customisable features Baya V4 has to offer.
To know other details, including the detailed steps, please refer to the article: https://docs.mithi.com/home/how-to-customize-the-web-client-login-page