Color pick from beatmap's background

[MeerukYang]

Let mappers pick colors from background in editor.

Assuming a mapper had already chosen this background for the beatmap.

For example:

If they'd like objects to be the color as the girl's hair (pink), the ribbon (blue), and the clouds (yellow). Currently they have to take a guess from this HSV board, only to get a approximate color. More accurate color only can pick externally, like in MS Paint whatever.

Able to directly pick object's color from the background makes it convenient for mappers when they want a color from the background.

[tadatomix]

If it was possible, I'd actually would like to have some popup that could show n amount of the most used colours like it does here?
https://palettegenerator.com/ (site is dead, but it was using k-means algorithm)

[cihe13375]

As a mapper I frequently did this before (in MS Paint or whatever). However, indeed there is a rule in RC saying (emphasis by me):

Each beatmap must use at least two different custom combo colours unless the default skin is forced. The combo colours must not blend with the beatmap's background/storyboard/video in any case. This is so hit objects are always visible to the player and custom skin's combo colours do not blend with the background accidentally.

Therefore, I think placing this feature into osu itself is probably misleading, as it gives a feel that it's OK to pick colors from BG directly without further adjustments. idk how strict this rule is enforced in practice though (it can be argued that this rule should be removed since everyone plays with 100% background dim, for example).

[MeerukYang]

#38391