Design 1 Print for Kids

we have several ideas for baby/kid room prints we would like to create to sell in our new business. The prints will be professionally printed on A4 size. The first print we want to create is using the words "future heart breaker est. 2015". We are not sure whether we should try a neutral colour (to appeal for both sexes) or have separate colours for each? Any suggestions would be much appreciated... I need something such like the attached file .. My budget : 5 $ Deadline : 24 hours or less .. Thank you ..