Luffy, Kidd, and Luo are called by Haimi as the "three small strong" of supernovae, all three of them have a very bright combat performance in the Ghost Island Battle, Luffy is fighting fiercely with the Four Emperor Kaido, and Kidd and Luo are even joining forces to take down big mother, obviously Oda wants to separate the combat strength of the three of them from the list of "supernovae".
With the intervention of the Overlord Color Entanglement, many Haimi believe that Luo will have a gap in strength with Luffy and Kidd in the future, after all, Luo is the only pirate in the three small strong who does not have the Overlord Color domineering. So will Luo have the domineering spirit of the overlord? If not, will there be a significant gap in strength with the other two? Let me discuss it briefly.

Luo will not have the domineering spirit of the Overlord
If you want to have a "domineering color", you must first look at the personality of the person himself. Haimi, who is familiar with Luo, knows that Luo's dream is not to become the new One Piece, he just wants to interpret the blank history and understand the truth of the world, which shows that Luo's ambitions are not as big as Kidd and the Four Emperors. And people with "overlord color domineering" generally have the dream of becoming a generation of hegemons, even the warring states in the navy, but also achieved the position of admiral. Therefore, from the perspective of personality alone, Luo is not suitable for "overlord color domineering".
Of course, the personality is not absolute, but Luo has not been able to show the "overlord" side since his appearance, which shows that Oda does not consider adding a "overlord color domineering" setting to Luo for the time being. In general, Luo did not have too much ambition, and did not "claim the king and dominate" like Kidd and Luffy, so it was more reasonable for Luo to have no overlord color.
Not dominating the color does not affect the overall strength
With the intervention of the "Overlord Winding" setting, we recognize the strength of this ability, but it is worth noting that this ability is not a "must" to become strong. Many strong people can still become ceiling-level figures even if they do not have "overlord color entanglement", such as hawkeye of the "world's first sword hero", the three admirals of the navy, etc., and even the newly promoted fourth emperor Blackbeard has not yet shown the "overlord color domineering spirit", although they do not have the overlord color, but each character has the strength to destroy the world and the earth, which does not affect their status and influence at sea at all.
It can be seen that as long as there is a certain achievement in other abilities, then even if there is no "hegemony", it will become the top strongest. Luo is such a character, although he does not have the overlord color domineering, but his fruit ability and combat IQ are the top existence, so the overlord color does not affect the upper limit of Luo's strength.
There are too many "elements" on Luo's body, and it is probably not appropriate to add the overlord color
In fact, Luo's fruit is too strong, and may even become the key "prop" of the entire main line, and its importance is self-evident. At the same time, Luo has developed his own fruit very well, and can easily control it in the face of any battle and enemy. Many Haimi think that Luo's fruit is too strong, and if you add "overlord color domineering" to it, it will break the original strength panel, which just shows the strength of Luo Guo.
Moreover, luo's element was not only the "strong fruit", he was also a descendant of the Draco's natural enemy "D One Clan". If you want to talk about Luo's shortcomings, only melee combat is weak, and this is even more doomed that Oda will not arrange "Overlord Color Domineering", after all, "Overlord Color Entanglement" is one of the ability to quickly improve close combat. If that were the case, wouldn't Luo be an "invincible" being? Therefore, Oda Sensei does not give him a "overlord color".
Why do you think Luo didn't have the domineering spirit? Please comment in the comments section.