Well, I think the choice will depend on whether it's a room that other people can see or not. If it's a room that people see, I think they'll choose a normal color and wallpaper. Generally, I think I will choose blue and green colors such as sky blue or light green, which are colors that can be comfortable and concetrated well. Also, I think I will choose the circled pattern or stripes that many people choose for the wallpaper. But if it's a room that people don't see, I think I'll choose my favorite colors and wallpaper. I like bright pink, yellow, and light purple mixed with pink and white, so I think I will choose theose colors. And I think I'm going to choose some noticeable and focused wallpaper, but I think I'm going to choose shiny wallpaper or princess style and antique wallpaper.

Thank you for submitting your answer. 
I really like the colors you chose, and I agree with the reason behind them. 
I would love to have that color too if my room were repainted—well, especially the light green one. ^^