matrixion/resources/styles/nheko.qss

QLabel {
    color: #333;
}

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

TimelineView,
TimelineView > * {
    background-color: white;
}

RoomList,
RoomList > * {
    background-color: white;
}

CommunitiesList,
CommunitiesList > * {
    background-color: white;
}

FlatButton {
    qproperty-foregroundColor: #333;
}

FileItem {
    qproperty-textColor: #333;
    qproperty-backgroundColor: #f2f2f2;
    qproperty-iconColor: white;
}

AudioItem {
    qproperty-textColor: #333;
    qproperty-backgroundColor: #f2f2f2;
    qproperty-iconColor: white;
}

RaisedButton {
    qproperty-foregroundColor: white;
}

RoomInfoListItem {
    qproperty-highlightedBackgroundColor: #38A3D8;
    qproperty-hoverBackgroundColor: rgba(200, 200, 200, 128);
    qproperty-backgroundColor: white;

    qproperty-titleColor: #333;
    qproperty-subtitleColor: #5d6565;

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

    qproperty-btnColor: #ccc;
    qproperty-btnTextColor: #333;
}

CommunitiesListItem {
    qproperty-highlightedBackgroundColor: #38A3D8;
    qproperty-hoverBackgroundColor: rgba(200, 200, 200, 128);
    qproperty-backgroundColor: white;
}

#ChatPageLoadSpinner {
    qproperty-color: #acc7dc;
}

#FileUploadSpinner {
    qproperty-color: #333;
}

UserInfoWidget, UserInfoWidget > * {
    background-color: #d6dde3;
    color: #ebebeb;
}

UserSettingsPage {
    background-color: white;
}

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

#displayNameLabel {
    color: #171919;
}

#userIdLabel {
    color: #555459;
}

dialogs--Logout,
dialogs--LeaveRoom,
dialogs--CreateRoom,
dialogs--InviteUsers,
dialogs--ReadReceipts,
dialogs--JoinRoom,
dialogs--PreviewImageOverlay,
QListWidget {
    background-color: white;
    color: #333;
}

WelcomePage,
LoginPage,
RegisterPage {
    background-color: white;
    color: #333;
}

emoji--Panel,
emoji--Panel > * {
    background-color: #eee;
    color: #333;
}

emoji--Category,
emoji--Category > * {
    background-color: white;
    color: #ccc;
}

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

TextField {
    qproperty-backgroundColor: white;
    qproperty-inkColor: #333;
    qproperty-labelColor: #333;
}

ScrollBar {
    qproperty-handleColor: #ccc;
    qproperty-backgroundColor: #efefef;
}