Most bar tape is available in a whole range of colors. Some like the Velox are brights, whereas many brands have gone for muted earth tones. The latter are more likely to go well with gravel bikes and gravel bike clothing, where manufacturers have usually adopted a muted color palette.
At the end of the day, bar tape color is a secondary consideration and you can go with what suits you. But most bar tape is available in black, which is probably the best choice to avoid it showing the dirt. Modern bar tape is designed to be washable and black or dark colored tape means that you won't have to spend too long scrubbing it to keep it looking tidy.