Then there are babylights, which are more delicate and lighter than highlights (via The Hair Boutique). From mindbodygreen, celebrity colorist and Redken brand ambassador, Matt Rez, explained what makes babylights different than regular highlights. "Babylights are super fine—floss thin—weaves of highlights via foiling techniques. ... they are not meant to be very pronounced and are intended to simulate a super-natural, sun-kissed result."
If you're looking to bring more fun colors to your hair, like blues, pinks, and more, you'll need to commit to a longer process. You'll need to lighten the hair that you want colored, and then the color will be added (via Pilorum Salon and Spa).
And for a lower maintenance way to change up your look, you could go for peekaboo highlights, which are highlights placed beneath the top layer of your hair so they just peek out. As your hair grows out, if you tend to wear your hair down, the root growth won't show as much, and peekaboo highlights can also be a way to try out more out-there rainbow and pastel colors without the full commitment (via Love to Know).
Talk to your stylist and make sure your vision for your hair matches with what they can deliver, and get out there and get your new look!