Several points: the currently installed version is indeed Gramps 6.0.6. Is it running exclusively on Windows? Linux? MacOS?
The first report should theoretically be available on Linux after installing the GraphViz library. On Windows and MacOS, this report is likely available without additional installation.
For colors and options, reports based on GraphViz have their own fields when called and launched.
Colors for views (and perhaps for some reports?) can be defined by users via Edit Menu → Preferences… under the Colors tab. For example, the Ancestor/Descendant Wheel view.
The second is a plugin (additional tools, reports, gramplets):
https://gramps-project.org/wiki/index.php/Addon:GenealogyTree
It requires an additional library: genealogytree
For views, it is possible to export the on-screen display via the Print function in Gramps (via the toolbar ‘’‘⎙’‘’ or via Edit Menu → Print…). This generates a .gv file (GraphViz format) and a .svg file (a vector format), allowing you to zoom and print the content as if it were an image, without loss of quality. Thus, you need not worry about the report’s format or size.
For example, this type of tree can also be printed:
https://www.gramps-project.org/wiki/images/c/c5/Graph-View-addon-example-60.png
https://www.gramps-project.org/wiki/index.php/Addon:Graph_View
Best regards,
Jérôme