/* XPM */
-static char *depth[]={
-"20 20 4 1",
-"# c None",
-". c #000000",
-"b c #7b0000",
-"a c #ffffff",
-".##a##a##a##a##a##a.",
-".aaaaaaaaaaaaaaaaaa.",
-".aa..............aa.",
-".aaaaaaaaaaaaaaaaaa.",
-".aa..............aa.",
-".aaaaaaaaaaaaaaaaaa.",
-".aaaaaaabbbbbbbbbaa.",
-".aaa.aaaaaaaaaaaaaa.",
-"#aaa..aabbbbbbbbbaa.",
-"#......aaaaaaaaaaaa.",
-"#aaa..aabbbbbbbbbaa.",
-".aaa.aaaaaaaaaaaaaa.",
-".aaaaaaabbbbbbbbbaa.",
-".aaaaaaaaaaaaaaaaaa.",
-".aaaaaaaaaaaaaaaaaa.",
-".aa..............aa.",
-".aaaaaaaaaaaaaaaaaa.",
-".aa..............aa.",
-".aaaaaaaaaaaaaaaaaa.",
-".##a##a##a##a##a##a."};
+static char * depth_increment_xpm[] = {
+"20 20 5 1",
+" c None",
+". c #00FFFF",
+"+ c #0000FF",
+"@ c #000000",
+"# c #0000BC",
+" ",
+" ",
+" .+ ",
+" ++@ @@@@@@@@ ",
+" @@ ",
+" +# ",
+" ++# ",
+" +++# ",
+" .+ +++++++++# ",
+" ++@ ++++++++++# ",
+" @@ +++++++++# ",
+" +++# ",
+" ++# ",
+" +# ",
+" .+ ",
+" ++@ @@@@@@@@ ",
+" @@ ",
+" ",
+" ",
+" "};