One of the nice things about dragon tattoos with no color at all is that it is unisex; both men and women can use the design. However, just adding a little bit of color to it, maybe just to outline it would make a huge difference in the appearance and the beauty of the tattoo.
One of these designs is a blue dragon in an upright flying position, with a green underside and orange flames all around it. When thinking about whether or not the tattoo is best for males or females, it is really all about the color scheme. With the blue dragon, this is mostly for men because it is fierce and powerful. If the tattoo were different shades of pink than quite obviously no man would be caught dead with that design. It is for a woman to have.
My family has a special phrase that I've had translated into Chinese (Always & Forever). I'm going to get my first tatoo and require a custom design as I haven't seen anything so far that's quite right... I'd like some scrollwork intertwined, maybe with a dragonfly