matrixion/resources/styles/nheko-dark.qss

QLabel {
    color: #caccd1;
}

#chatPage,
#chatPage > * {
    background-color: #202228;
}

#sideBar {
    border: none;
    border-right: 1px solid #202228;
    border-left: 1px solid #202228;
}

TimelineView,
TimelineView > * {
    background-color: #202228;
}

QuickSwitcher {
    background-color: #202228;
}

DateSeparator {
    qproperty-textColor: #caccd1;
    qproperty-boxColor: rgba(45, 49, 57, 120);
}

SuggestionsPopup {
    background-color: #202228;
}

PopupItem {
    background-color: #202228;
    qproperty-hoverColor: rgba(45, 49, 57, 120);
}

RoomList,
RoomList > * {
    background-color: #2d3139;
}

CommunitiesList,
CommunitiesList > * {
    background-color: #2d3139;
}

FlatButton {
    qproperty-foregroundColor: #727274;
    qproperty-backgroundColor: #333;
}

FileItem {
    qproperty-textColor: #caccd1;
    qproperty-backgroundColor: #2d3139;
    qproperty-iconColor: #caccd1;
}

AudioItem {
    qproperty-textColor: #caccd1;
    qproperty-backgroundColor: #2d3139;
    qproperty-iconColor: #caccd1;
}

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

RoomInfoListItem {
    qproperty-highlightedBackgroundColor: #4d84c7;
    qproperty-hoverBackgroundColor: rgba(57,103,158, 100) ;
    qproperty-backgroundColor: #2d3139;

    qproperty-titleColor: #e4e5e8;
    qproperty-subtitleColor: #caccd1;

    qproperty-highlightedTitleColor: #f4f4f5;
    qproperty-highlightedSubtitleColor: #e4e5e8;

    qproperty-btnColor: #414A59;
    qproperty-btnTextColor: white;

    qproperty-timestampColor: #727274;
    qproperty-highlightedTimestampColor: #e7e7e9;

    qproperty-avatarBgColor: #202228;
    qproperty-avatarFgColor: white;

    qproperty-bubbleFgColor: white;
    qproperty-bubbleBgColor: #4d84c7;
}

CommunitiesListItem {
    qproperty-highlightedBackgroundColor: #4d84c7;
    qproperty-hoverBackgroundColor: rgba(57,103,158, 100);
    qproperty-backgroundColor: #2d3139;

    qproperty-avatarBgColor: #202228;
    qproperty-avatarFgColor: white;
}

LoadingIndicator {
    qproperty-color: #caccd1;
}

UserInfoWidget, UserInfoWidget > * {
    background-color: #2d3139;
    color: #b0b3ba;
}

UserInfoWidget {
    border: none;
    qproperty-borderColor: #202228;
}

UserSettingsPage {
    background-color: #202228;
}

Avatar {
    qproperty-textColor: white;
    qproperty-backgroundColor: #2d3139;
}

#displayNameLabel {
    color: #f2f2f2;
}

#userIdLabel {
    color: #f2f2f2;
}

dialogs--Logout,
dialogs--ReCaptcha,
dialogs--LeaveRoom,
dialogs--CreateRoom,
dialogs--RoomSettings,
dialogs--InviteUsers,
dialogs--ReadReceipts,
dialogs--JoinRoom,
dialogs--MemberList,
dialogs--PreviewUploadOverlay,
dialogs--CreateRoom > QLineEdit,
dialogs--InviteUsers > QLineEdit,
dialogs--JoinRoom > QLineEdit {
    background-color: #202228;
    color: #caccd1;
}

TopSection {
    qproperty-textColor: #caccd1;
}

QListWidget,
WelcomePage,
LoginPage,
RegisterPage {
    background-color: #202228;
    color: #caccd1;
}

emoji--Panel,
emoji--Panel > * {
    background-color: #202228;
    color: #caccd1;
}

emoji--Category,
emoji--Category > * {
    background-color: #2d3139;
    color: #caccd1;
}

FloatingButton {
    qproperty-backgroundColor: #2d3139;
    qproperty-foregroundColor: white;
}

TextField {
    qproperty-backgroundColor: #202228;
    qproperty-inkColor: #caccd1;
    qproperty-labelColor: #caccd1;
}

ScrollBar {
    qproperty-handleColor: #2d3139;
    qproperty-backgroundColor: #202228;
}

SideBarActions {
    border: none;
    qproperty-borderColor: #202228;
    background-color: #2d3139;
}

TopRoomBar {
    border: none;
    qproperty-borderColor: #202228;
    background-color: #2d3139;
}

QLineEdit {
    background-color: #202228;
    color: #caccd1;
}

TextInputWidget,
TextInputWidget > QTextEdit,
TextInputWidget > QLineEdit {
    qproperty-borderColor: #202228;
    background-color: #2d3139;
    color: #caccd1;
}