matrixion/resources/styles/nheko-dark.qss

QLabel {
    color: #caccd1;
}

#chatPage,
#chatPage > * {
    background-color: #383c4a;
}

TimelineView,
TimelineView > * {
    background-color: #383c4a;
}

RoomList,
RoomList > * {
    background-color: #383c4a;
}

FlatButton {
    qproperty-foregroundColor: #caccd1;
    qproperty-backgroundColor: #333;
}

RaisedButton {
    qproperty-foregroundColor: #caccd1;
    qproperty-backgroundColor: #333;
}

RoomInfoListItem {
    qproperty-highlightedBackgroundColor: #5294e2;
    qproperty-hoverBackgroundColor: #39679e;
    qproperty-backgroundColor: #383c4a;

    qproperty-titleColor: #caccd1;
    qproperty-subtitleColor: #caccd1;

    qproperty-highlightedTitleColor: #e4e5e8;
    qproperty-highlightedSubtitleColor: #e4e5e8;
}

LoadingIndicator {
    qproperty-color: #caccd1;
}

UserInfoWidget, UserInfoWidget > * {
    background-color: #383c4a;
    color: #b0b3ba;
}

UserSettingsPage {
    background-color: #383c4a;
}

Avatar {
    qproperty-textColor: black;
    qproperty-backgroundColor: #b0b3ba;
}

#displayNameLabel {
    color: #f2f2f2;
}

#userIdLabel {
    color: #f2f2f2;
}

LogoutDialog,
LeaveRoomDialog {
    background-color: #383c4a;
    color: #caccd1;
}

WelcomePage,
LoginPage,
RegisterPage {
    background-color: #383c4a;
    color: #caccd1;
}

EmojiPanel,
EmojiPanel > * {
    background-color: #383c4a;
    color: #caccd1;
}

EmojiCategory,
EmojiCategory > * {
    background-color: #383c4a;
    color: #caccd1;
}

FloatingButton {
    qproperty-backgroundColor: #efefef;
    qproperty-foregroundColor: black;
}

TextField {
    qproperty-backgroundColor: #383c4e;
    qproperty-inkColor: #caccd1;
}

QLineEdit,
QTextEdit {
    background-color: #383c4a;
    color: #caccd1;
}