TeamRaiser page background image

Hi there,

Potentially a silly question.

I want to create a new TeamRaiser event. My hope is just to copy the other one we have active now and make a few small adjustments (white background, remove the coundown, etc.) Everything's been pretty easy so far - I've copied and changed the TR site wrapper and reusable pages and adjusted to match what I want. But I can seem to find where to change out the image of the three boys in the header. I don't see it in the Greeting page WSYWIG, the Site Wrapper Editor, or any of the reusable pages. Any ideas?

Thanks,

Sarah