You can now harvest petals of flowers, this kills the flower completely. You can also test the flower to see if it works for your Maat requirements. As such, this is an indirect way to see what the color of your flowers are.
The part of the test that varies per person is the type and color of the petals needed. Another example would be "leaves: magenta."
Note that the festival requires Ritual Torches, not glass torches. Ritual torches cost 1 canvas + 1 board to construct and require 1 oil to soak the torch, after which it can be lit. Ritual torches burn for just a few minutes and then disappear. Maat altar riggings are thus temporary. It is possible to salvage the torches before they finish burning for a chance of recovering canvas and boards, but do not do this before all in attendance have pleased Maat.
The Maat festival has been succesfully tested.
(See also: tests, The Test of Festivals, Determining Festival Requirements, Rose of Ra Color Database, Festival Schedule, Festival Needs, and Maat Inventory)