This was addded in T87261, which asked for a gray box.

Agree this should not be styled as a warning and per @Snaevar the last time this was changed was to use the notice or neutral message styling with pale grey background. There is opportunity to improve to be more encouraging sign up styling and message tone (similar to work done on T284740), but minimum should no longer use warning style.

The notice system only supports warnings and errors. Wouldn't be hard to add something else, but then saying that Wikipedia was made by people like you isn't really a notice in the first place. It should probably be converted to use the SpecialCreateAccountBenefits hook, which also gives more freedom over formatting and content.

In T363035#9739924, @Tgr wrote:

The notice system only supports warnings and errors. Wouldn't be hard to add something else, but then saying that Wikipedia was made by people like you isn't really a notice in the first place. It should probably be converted to use the SpecialCreateAccountBenefits hook, which also gives more freedom over formatting and content.

That makes sense to me. If we go down this path @JFernandez-WMF from Growth-Team can provide design to be consistent with the account benefits text in T284740.

Note: The issue is reproducible on mobile

• when Special:CreateAccount is accessed by a non-logged user

• when a user is on Special:UserLogin