Aw, baby boss theme is so cute ngayon! Honestly, any color ng balloons works as long kaya mo i-coordinate with your overall setup, a few of us did pastel colors (light yellow, light blue, white) para sa baby boss, and it looked so elegant na parang corporate baby haha, pero may iba ring gumamit ng bright colors like gold at blue, super vibrant! Go with whatever makes you happy, it's your binyag after all, at ang importante talaga is na maganda ang buo mong vision together.