I have never really been a fan of the large/wild graphics used on RV's these days. Toy haulers in particular seem to be VERY wild in general. I seriously considered removing the graphics stickers on our trailer. However, after paying close attention to the few RV's out there without graphics, I decided that all one color was too plain. In my opinion, something small/basic is needed. And on that note...If I am not mistaken, it looks like the motorhome in the OP's picture has a thin pin stripe design? I like it.
I snapped a pic of this trailer I saw last year. I REALLY liked how it had some design to it but without the glaring graphics (plus I am a sucker for grays/silvers). If you look closely, you'll see that even the AC's are detailed to match the area they are mounted in.
edit...funny...I just took a closer look at the OP's picture and see that it is in fact a toyhauler!
'04 GMC Sierra 2500HD, CCSB, D/A, MaxBrake, B&W Companion, Retrax Pro, AR Power Steps
2013 Rockwood 8289WS w/Diamond pkg
1969 Camaro RS/SS Convertible
Dad's old 1968 Empi Imp (recently recovered from under 21 years worth of boxes/dust)