Add dflt_colors to list of supported draw options

Many geometry do not have colors at all

Author: linev

scripts/JSRootPainter.js

@@ -10507,10 +10507,10 @@
    JSROOT.addDrawFunc({ name: "TBox", icon: 'img_graph', prereq: "more2d", func: "JSROOT.Painter.drawBox" });
    JSROOT.addDrawFunc({ name: "TWbox", icon: 'img_graph', prereq: "more2d", func: "JSROOT.Painter.drawBox" });
    JSROOT.addDrawFunc({ name: "TSliderBox", icon: 'img_graph', prereq: "more2d", func: "JSROOT.Painter.drawBox" });
-   JSROOT.addDrawFunc({ name: "TGeoVolume", icon: 'img_histo3d', prereq: "geom", func: "JSROOT.Painter.drawGeoObject", expand: "JSROOT.GEO.expandObject", opt:";more;all;count" });
-   JSROOT.addDrawFunc({ name: "TEveGeoShapeExtract", icon: 'img_histo3d', prereq: "geom", func: "JSROOT.Painter.drawGeoObject", expand: "JSROOT.GEO.expandObject", opt: ";more;all;count"  });
-   JSROOT.addDrawFunc({ name: "TGeoManager", icon: 'img_histo3d', prereq: "geom", expand: "JSROOT.GEO.expandObject", func: "JSROOT.Painter.drawGeoObject", opt: ";more;all;count", dflt: "expand" });
-   JSROOT.addDrawFunc({ name: /^TGeo/, icon: 'img_histo3d', prereq: "geom", func: "JSROOT.Painter.drawGeoObject", opt: ";more;all;axis;compa;count" });
+   JSROOT.addDrawFunc({ name: "TGeoVolume", icon: 'img_histo3d', prereq: "geom", func: "JSROOT.Painter.drawGeoObject", expand: "JSROOT.GEO.expandObject", opt:";more;all;count;dflt_colors" });
+   JSROOT.addDrawFunc({ name: "TEveGeoShapeExtract", icon: 'img_histo3d', prereq: "geom", func: "JSROOT.Painter.drawGeoObject", expand: "JSROOT.GEO.expandObject", opt: ";more;all;count;dflt_colors"  });
+   JSROOT.addDrawFunc({ name: "TGeoManager", icon: 'img_histo3d', prereq: "geom", expand: "JSROOT.GEO.expandObject", func: "JSROOT.Painter.drawGeoObject", opt: ";more;all;count;dflt_colors", dflt: "expand" });
+   JSROOT.addDrawFunc({ name: /^TGeo/, icon: 'img_histo3d', prereq: "geom", func: "JSROOT.Painter.drawGeoObject", opt: ";more;all;axis;compa;count;dflt_colors" });
    // these are not draw functions, but provide extra info about correspondent classes
    JSROOT.addDrawFunc({ name: "kind:Command", icon: "img_execute", execute: true });
    JSROOT.addDrawFunc({ name: "TFolder", icon: "img_folder", icon2: "img_folderopen", noinspect: true, expand: JSROOT.Painter.FolderHierarchy });