Not just the colour .... but also the overall design and skill of the quilt.
There are no set rules ... what one person likes, another does not.
However, you probably want to consider a quilt that is of the most liking to more people.
Your community likings are apt to be different from what others may like in other communities within you rstate and beyond.
Also, you need to consider who your "target market" is for selling your tickets, and what may be to their liking.
Plus ... what are the other prizes ... some people may not want your quilt, yet would want the other prizes in teh drawing.
Of course, you may be fortunate enough to have people who will buy tickets, no matter what is in the draw, buying tickets to support the overall reason for the draw.