Pavement patterns in Caledonian Road

I was ambling back from my sorting office yesterday pondering why there is so much bird shit splattered around lately.
As I was crossing Cardozo Road I noticed that the textured crossing was particularly 'colourful'. I wondered whether Daily Mail readers' children might think it was cappuccino froth topping and try to eat it (or something similar, you know what I mean).
Hmmmm... Perhaps birds could be supplied with little plastic bags for their deposits or fitted with tiny nappies...?
I took a photo and wondered how this could be crowbarred (crow! ha ha) into a blog post. Then I noticed all the paint splatters nearby...

Last two pics show the junction of Penn Road and Caledonian Road. I never fail to be amused by the double yellow lines in the cycle path there. 

It's evident that someone has been having fun with paint on their shoes and on the wheels of a bike. There are also squiggles on the pavement where areas have been cleaned in definite patterns using what I assume is a jetwasher.
Walking further along the road towards Holloway I found the name Sam near the junction of Penn Road.
Nice one Sam... now please turn your attention to the whole pavement – and then get to grips with most of the London Underground and the Jubilee Bridges.

More about the pavements of Cally Rd next week.... ooh the excitement...!