made this pretty quickly so there’s probably some dodgy colours in places but it mostly works for me!

You should be able to just copy paste the theme here. This is one of the stock ones.

{“archivedTint”:“#FFB4009F”,“authorFlairTextColor”:“#FFEE02C4”,“awardedCommentBackgroundColor”:“#FF000000”,“awardsBackgroundColor”:“#FFEEAB02”,“awardsTextColor”:“#FFFFFFFF”,“backgroundColor”:“#FF000000”,“bottomAppBarBackgroundColor”:“#FF000000”,“bottomAppBarIconColor”:“#FFFFFFFF”,“buttonTextColor”:“#FFFFFFFF”,“cardViewBackgroundColor”:“#FF000000”,“chipTextColor”:“#FFFFFFFF”,“circularProgressBarBackground”:“#FF000000”,“colorAccent”:“#FF02EE80”,“colorPrimary”:“#FF000000”,“colorPrimaryDark”:“#FF000000”,“colorPrimaryLightTheme”:“#FFEE0270”,“commentBackgroundColor”:“#FF000000”,“commentColor”:“#FFFFFFFF”,“commentIconAndInfoColor”:“#B3FFFFFF”,“commentVerticalBarColor1”:“#FF0336FF”,“commentVerticalBarColor2”:“#FFC300B3”,“commentVerticalBarColor3”:“#FF00B8DA”,“commentVerticalBarColor4”:“#FFEDCA00”,“commentVerticalBarColor5”:“#FFEE0219”,“commentVerticalBarColor6”:“#FF00B925”,“commentVerticalBarColor7”:“#FFEE4602”,“crosspostIconTint”:“#FFFF1868”,“currentUser”:“#FF00D5EA”,“dividerColor”:“#FF69666C”,“downvoted”:“#FF007DDE”,“fabIconColor”:“#FFFFFFFF”,“flairBackgroundColor”:“#FF00AA8C”,“flairTextColor”:“#FFFFFFFF”,“fullyCollapsedCommentBackgroundColor”:“#FF21C561”,“isAmoledTheme”:false,“isChangeStatusBarIconColorAfterToolbarCollapsedInImmersiveInterface”:false,“isDarkTheme”:false,“isLightNavBar”:false,“isLightStatusBar”:false,“isLightTheme”:false,“linkColor”:“#FFFF1868”,“lockedIconTint”:“#FFEE7302”,“mediaIndicatorBackgroundColor”:“#FFFFFFFF”,“mediaIndicatorIconColor”:“#FF000000”,“moderator”:“#FF00BA81”,“name”:“Red Amoled”,“navBarColor”:“#FF000000”,“noPreviewPostTypeBackgroundColor”:“#FF424242”,“noPreviewPostTypeIconTint”:“#FF808080”,“nsfwBackgroundColor”:“#FFFF1868”,“nsfwTextColor”:“#FFFFFFFF”,“postContentColor”:“#B3FFFFFF”,“postIconAndInfoColor”:“#B3FFFFFF”,“postTitleColor”:“#FFFFFFFF”,“postTypeBackgroundColor”:“#FF0336FF”,“postTypeTextColor”:“#FFFFFFFF”,“primaryIconColor”:“#FFFFFFFF”,“primaryTextColor”:“#FFFFFFFF”,“readPostCardViewBackgroundColor”:“#FF000000”,“readPostContentColor”:“#FF979797”,“readPostTitleColor”:“#FF979797”,“receivedMessageBackgroundColor”:“#FF4185F4”,“receivedMessageTextColor”:“#FFFFFFFF”,“secondaryTextColor”:“#B3FFFFFF”,“sendMessageIconColor”:“#FF4185F4”,“sentMessageBackgroundColor”:“#FF31BF7D”,“sentMessageTextColor”:“#FFFFFFFF”,“singleCommentThreadBackgroundColor”:“#FF123E77”,“spoilerBackgroundColor”:“#FFEE02EB”,“spoilerTextColor”:“#FFFFFFFF”,“stickiedPostIconTint”:“#FF0336FF”,“submitter”:“#FFEE8A02”,“subreddit”:“#FFFF1868”,“subscribed”:“#FFFF1868”,“tabLayoutWithCollapsedCollapsingToolbarTabBackground”:“#FF000000”,“tabLayoutWithCollapsedCollapsingToolbarTabIndicator”:“#FFFFFFFF”,“tabLayoutWithCollapsedCollapsingToolbarTextColor”:“#FFFFFFFF”,“tabLayoutWithExpandedCollapsingToolbarTabBackground”:“#FF000000”,“tabLayoutWithExpandedCollapsingToolbarTabIndicator”:“#FFFFFFFF”,“tabLayoutWithExpandedCollapsingToolbarTextColor”:“#FFFFFFFF”,“toolbarPrimaryTextAndIconColor”:“#FFFFFFFF”,“toolbarSecondaryTextColor”:“#FFFFFFFF”,“unreadMessageBackgroundColor”:“#FF123E77”,“unsubscribed”:“#FF0336FF”,“upvoteRatioIconTint”:“#FF0256EE”,“upvoted”:“#FFFF1868”,“username”:“#FF1E88E5”,“voteAndReplyUnavailableButtonColor”:“#FF3C3C3C”}