Skin colors and dark_penis -> darkER_penis

As in its own description, darker_penis seems to be a more obvious tag to notify directly a penis is darker than whatever tint of skin is around, rather than simply a relatively dark penis on its own.

Also talking about skins, why is the tag light skin deprecated? Because the negative -dark-skin also includes all black, white, and other colored skins, so it's not accurate at all. And why not directly brown_skin instead or very_dark_skin?

Natural tints: light including pale (very light), and dark including brown (very_dark)
Colored tints: white, grey, black, etc. and multicolored (why not multitone ?) including two_tone (except natural pigmentation like the genitalia example above)

Also would an exception be possible when the skin is so dark or pale than it's almost literally black or white, but still looks like in the range of natural color to use both types of tags? (But It's not easy to see when it's between only dark or very dark/very_very_dark_but_not_black or blackish/very_dark_grey (because dark shades already begins here I remind post #6227389 )
For example those has been tagged dark_skin AND black_skin (but not very_dark_skin?)
r:e post #6107884
post #6010991
post #6045155
post #3278519 (Faputa!)

In fact it's even duller than I imagined. We have roughly:
400 "dark_skin black_skin" https://danbooru.donmai.us/posts?tags=dark_skin+black_skin&z=5
3,3k "pale_skin white_skin" https://danbooru.donmai.us/posts?tags=pale_skin+white_skin&z=5

While for example this is clearly unnatural dark post #5670895
The last also brings me the question of the use of dark-skinned_female and dark-skinned_male. (But I think I'm already gonna remove the "dark" tags for this one)
On another hand any colored skin also have high variation between darker and lighter color, so could the dark-skinned* tags apply here? And why is it the only one like that without even pale-skinned*?

(Also what has decided when a tag is rather male/female than boy/girl? *boy* includes cowboy and *male* includes female so is there even a good solution...)

Kuchc_Sorrin said:

Also talking about skins, why is the tag light skin deprecated? Because the negative -dark-skin also includes all black, white, and other colored skins, so it's not accurate at all.

We don't use light_skin on account of it being applicable to 99.99% of posts on the site. For particularly light skin, we have pale_skin.

I didn't understand the majority of the post, but

For example those has been tagged dark_skin AND black_skin (but not very_dark_skin?)

very dark skin is a lesser known and undertagged, i bet it's post count could be multiplied by 5 and there would still be a significant portion of missing posts under it

And why not directly brown_skin instead or very_dark_skin?

i'm not sure if you meant "of" instead of "or" but assuming you did: "brown skin" is rarely "very dark", that term would cover skin tones from the darkest tans to just anything that's comparatively lighter than the darkest skin tones on the african continent; "brown" skin" also isn't very intuitive as a tag since not-light skin tones are a can of worms when it comes to anime, and it would end up just being an umbrella tag including both tan and dark skin but not most of very dark skin, which doesn't make any sense.
Additionally, fyi "brown skin" as used by black people specifically refers to a middle-range in skin tones that's darker than your average tanned anime girl and, most importantly, lighter than half of what would fall under very dark skin, basically: just dark_skin -very_dark_skin

While for example this is clearly unnatural dark post #5670895

Yeah, that's grey skin

Also would an exception be possible when the skin is so dark or pale than it's almost literally black or white, but still looks like in the range of natural color to use both types of tags

At least i think it should, just looking at the abyssal ships from kancolle, that's an exemple of numerous cases where it's ambiguous wether the skin is really white or just really pale, tag those using the logic of "would someone searching for that tag be bothered to find this post under it?" on a case to case basis, just like there is some understandable overlap between white hair and grey hair or others