Something I would not state here for confidentiality reasons. However, generally there is a lot of factors to consider, such as Moodle version, theme to be modified or child theme etc. In addition much more detail on the requirements, such as if it needs to be via the user interface or hard coded. Altered screen shot examples help too.
Themes
Addition banner image to home, login, course list screens
Arutelu on lukustatud, seetõttu ei saa te sellele enam vastata.