Is it worth implementing a change of color themes in the settings or leaving light + dark?

Question

User interface

Good day,
The question concerns the color component of the design. Now we are developing one project and the following question has appeared (more for myself): is it worth implementing the ability to change the theme in the settings for users? The user wanted the n-color elements not blue, but red, or green - he switched them in the settings (themes are implemented, just global switching of 3 colors), or else make 2 themes: standard + dark, since I know many people who sit in night time, and the light theme strains the eyes a lot.
Please, no "holivars", only your opinion

Answer 1

It seems that there is nothing complicated in the implementation of color schemes. 3 variables. But this will only be for light or dark in most cases.
From dark to light and vice versa, as a rule, more work.

Answer 2

One well thought out.

Answer 3

Only one, never used such a function where it is, tk. disorientation sets in. So I don't recommend wasting your time.
It is worth implementing only the page size, because. sometimes at the end of the day you have to enlarge the page in order to see something, or make a special theme for color anomalies, which will be much more useful, for example, even for me;)