Help Wanted: Denim Mode product screenshots present too much contrast in Dark Mode

[cwarnermm]

Context

In the Mattermost Product Documentation, all product captures are taken with Denim.

However, when viewing the product documentation in Dark Mode, product captures are too bright and present too much contrast.

A darker Mattermost theme, such as Onyx may be better suited for Dark Mode screenshots.

However, we want to avoid having to maintain 2 sets of screenshots, one for Light Mode and another for Dark Mode.

What technical options are available to address this issue?

Example:

[cwarnermm]

The Acknowledge Icons in Set message priority (beta) - Mattermost documentation are red when you switch to the dark mode in the docs.

If you switch to the theme "Indigo" or "Onyx" the button is still green, so the icon / screenshot in the doc should be adjusted when in dark mode.