I don't use dilber but for the "change this color" part (the header) you can right click on it and see if you can "Save image as". This means it is an image. Otherwise, it is part of style.css. RR can help you furter with that.
What is the "remove this" part? It is hard to see but looks like the TP shrink/expand links for the columns. You can turn those off by going to TP general settings and set "Allow the panels to be collapsed?" to no. Please post a larger image of that part.
Not sure of the "remove this whole part..." I assume it is either in Display.template,php and/or style.css.