Usual rules apply.
As its a new topic for most of us and there hasnt been much info about it I think its only fair that there is a little lee-way in regards to colour. A subtle piece of colour such as a single piece of flower stem seems acceptable.
Usual rules of one per person.
This theme can have a few meanings, reflections as in ones in water or glass, or the kind you do in your head..
The second choice will mean you need to capture that look on someones face or even an animal.