How do I customize confluence skin?

I would like to choose the Atlassian Confluence. It is a great tool, for the large organizations that have multiple projects going at the same time. The integration time of the Confluence is relatively low when compared to the other products. When it comes to the user functionality and the scum functionality Confluence got it covered in the very good way. For the larger organizations like the company I work for has a huge workload on these applications, so the one with the greatest performance capacity must be selected. Atlassian has also other frameworks to integrate into git, bitbucket, etc. These are all prebuilt functionalities and once you license the product it’s a very easy job to maintain the product. There are wiki pages that are Atlassian provides which can help the developer do the document as the sprints are going by. The workflows can be created like what happens next when the developer is done with coding and where and whom should this story get assigned to. All these features provide Atlassian as the best Agile Scrum tool