User blog comment:Monkeypolice188/GTA Wiki Christmas Banner/@comment-9101338-20151205010520/@comment-5883104-20151205073322

Unfortunately I do not believe that there is any way to change the background colour of the numbers in the clock without major changes to the template, as the numbers are portable network graphics (PNG) images, and new images with a different colour will need to be uploaded to create the effect that you desire.