Mine is lime and turquoise. It has a palm tree on the wall also. It's pretty!
I think yellow and pink would be good! Use patterns in that color, too, like polka dots. They make any room fresh and cute. Keep in mind, that if you flip through some magazines with rooms in them they are only display. Even if you order everything in it it will not look like the display room because you have possessions to put in that room. It will look more cluttered. Unless you want to rent a storage vault. But it will look somewhat as nice, although the chances are slim that you can pull enough strings to order the whole catalog.
You don't always need catalogs for room designs, though, I don't mean that. How about pink and lime green? Or pink, yellow, and green? Two shades of pink are cute, too, but if you don't like all that pink, do pink and purple. If you aren't that type, try lime, bright yellow, and orange. If you like lots of colors, try bright pink, orange, lime, and turquoise. Even add some yellow if you would like, but that is totally optional. Try every color of the rainbow, but remember to keep your colors bright and all the objects of the same general color match pretty well. This is rather hard to do, pull a room with all colors together, because if you have too little color or many different shades it could end up looking sloppy. So I wouldn't really do this.
Lighter pastels look sweet and fluffy. Brighter colors look bold and fresh. Choose an option.
Find a theme you like, and go for it. If it's hard to find, like if you want a Warriors themed room for example, it may be hard to find. So go with something more general, like cats. Not hard. And your room doesn't even have to have a theme, you can stick with the colors above. Just colors are cool.