I'm currently working on a mood board for an upcoming nursery project, and based off of experience, it's always best to go for a theme that is non gender specific for two particular reasons. One; mistakes do happen and sometimes you're not 100% certain of the gender. Two; you don't have spend too much when it's eventually time for a change of design. That being said, you can always use accent pieces such as; throws, pillows or even wall art to inject a hint of color into the space. Adding textured elements can also help turn a neutral themed room into a high-spirited one.
Below you will find an inspiration board that depicts the final design for the room along with links that will direct you to any item you may be interested in purchasing yourself. I don't necessarily stick with the exact same furniture shown in inspiration or mood boards I create, as some of them may be quite costly or even worse, no longer in stock or readily available. It's mainly the design scheme that I try to convey.