Big blue ball

Can you detect the suggestion of a theme in my blips this weekend ? ;) This blue...errr...thing used to hang on the end of a curtain rail till it dropped off one day a little while back. I was gazing out of my window with a vacant expression this afternoon when I noticed the play of blue light and I thought 'that looks blipstastic!'
(Note: I do have more than one window....)
I also have a track for today, although I'm not sure Roz will approve of this one....