You guys might expect me to say red, but honestly, even though the color red is associated with my identity, I actually liked anything that's colorful. Green is among my favorite, but depending on circumstance, I might instead pick blue or even purple. On the right condition, yellow turned amazing, because golden is glorious. That being said, white is among my fave, not only because metallic design such as silver is cool, but also because I know a large number of fictional characters with white hair.
As much as I identify with red, it's a little overrated because how powerful it is. Red is so strong, it can overwhelm black without being too bright, while also standing out in the brightness, even when it's not too dark. Red is usually used in horror, for something evil and ominous, which is why it can be overwhelming. Red is like the main character out of all colors, especially when it symbolize virtues such as bravery. However, it's definitely a powerful color, that it quickly gets overwhelming for the eyes. Maybe because we're naturally wired to associate red with blood and gore, so it can quickly gets disturbing. If you switch the color of bloody gory scenes to green or purple, then it would be somewhat less disturbing.
So yeah anyway, basically, I like anything that's colorful. Any colors could be great when done correctly, so it really just depend on the overall design.