Nixie’s right.Nothing wrong with theme/genre.
@dannymcg , @Karn's Return, its called a challenge for a reason; to challenge and take you out of your comfort zone.
I'll likely struggle this month, that's down to my own shortcomings, not the challenge.
From my own personal experience of the 75 I distinctly remember, on more than one occasion, reading a theme / genre for the first time and thinking ‘oh no, what on Earth am I going to do with that?’, only to discover that there is a certain amount of pleasure in overcoming adversity (for want of a better word).
Also, on occasion, when not a single idea has occurred to me the very act of sitting down and writing starts the ideas flowing.