/usr/share/bombono/resources/gtkrc is in bombono-dvd-data 1.2.1-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105  | style "TrackBrowserStyle"
{
    #GtkTreeView    ::vertical-separator = 15
    #GtkTreeView    ::horizontal-separator = 0
    #GtkTreeView    ::tree-line-width    = 10
    #GtkTreeView    ::expander_size        = 15
}
style "MenuEntryStyle"
{
    font_name = "13"
}
style "MListButtonBoxStyle"
{
    GtkButtonBox    ::child-min-width = 70
}
# :TODO: replace by 'widget' expr
# widget "*.TrackBrowser" style "TrackBrowserStyle"
widget_class "*GtkTreeView" style "TrackBrowserStyle"
widget "*MenuBrowser.GtkEntry" style "MenuEntryStyle"
widget "*MListButtonBox" style "MListButtonBoxStyle"
#
# TrackLayout
# 
style "TrackLayoutStyle"
{
    GtkPaned       ::handle_size    = 0
}
style "NonActiveButtonStyle"
{
                     xthickness        = 1
                     ythickness        = 1
    GtkWidget      ::focus-padding     = 0
    GtkWidget      ::focus-line-width  = 0
}
style "ScaleTrackButtonStyle" = "NonActiveButtonStyle"
{
    GtkButton      ::inner_border    = { 1, 1, 1, 3 }
}
style "DVDLabelButtonStyle" = "NonActiveButtonStyle"
{
    GtkButton      ::inner_border    = { 4, 4, 1, 1 }
}
style "BigLabelEntryStyle"
{
    #font_name = "FreeSans Bold 11"
    font_name = "Nimbus Sans L Bold Condensed 13"
}
style "MenuNotebookStyle"
{
    #xthickness = 0
    ythickness = 0
}
#widget "*MenuNotebook" style "MenuNotebookStyle"
widget "*AppXPaned" style "TrackLayoutStyle"
widget "*ScaleTrackButton" style "ScaleTrackButtonStyle"
widget "*DVDLabelButton" style "DVDLabelButtonStyle"
#widget "DVDLabelButton" style "DVDLabelButtonStyle"
widget "*BigLabelEntry" style "BigLabelEntryStyle"
style "NewProjectStyle"
{
    GtkDialog    ::content-area-border = 0
}
widget "*NewProject" style "NewProjectStyle"
style "AboutDialogStyle"
{
    bg_pixmap[NORMAL]="about-back.png"
}
widget "*AboutBombonoDVD" style "AboutDialogStyle"
style "AboutDialogTextStyle"
{
    fg[NORMAL] = "#ffffff"
    fg[PRELIGHT] = "#ffffff"
}
widget "*AboutBombonoDVD*GtkLabel" style "AboutDialogTextStyle"
style "AboutDialogButtonStyle"
{
    GtkWidget::link-color = "#ffffff"
    #bg_pixmap[NORMAL]="about-back.png"
    bg[PRELIGHT] = "#398799"
    bg[NORMAL] = "#398799"
}
# :TODO: why dont work "*AboutBombonoDVD*<GtkButton>" ?
widget "*AboutBombonoDVD*GtkLinkButton" style "AboutDialogButtonStyle"
widget "*AboutBombonoDVD*GtkButton" style "AboutDialogButtonStyle"
style "SplashWinStyle"
{
    bg_pixmap[NORMAL]="splash-bmd.png"
}
widget "*SplashWin" style "SplashWinStyle"
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