This background looks better on big screen. But mainly I did the switch since I am using that previous background on code making place. So I didnt abandon the picture, just changed it to other place. Didnt really have any other suitable looking background picture for that coding place, so had to put it there for that reason. For this arena place I at least had alternatives, and this one seemed to work best from them.
If I have time, I am also ooking for more background graphics still. Basically I am hoping of having three different backgrounds for arena places, but currently there is only one, and I am afraid, time is tight enough that it might stay that way too.