Lots of new versions!
#18 Simply changes the "i" to an exclamation point. If you would like to see this one in another color (or all colors), please let me know!
#19 , #20 , #21 , #22 , #23 and #24 are all versions of #13 with different color variations. I tried to stick with the boldest of each color. I still love the red but (unfortunately) I think you might be right about how it suggests blood.
Personally, I think the yellow is a little weak (and comes too close to Philadelphia's). Is there any sort of color connected to Cincinnati? I chose the second, lighter blue to try and match the color of The Roebling Bridge.