Classic one (orange). Look like bitcoin logo, maybe it will also make people confident with it...or they will think "Huh, another clone..."":
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi62.tinypic.com%2F1z32qdv.png&t=637&c=UtYC8GGe8RZPFg)
Red. Very aggressive. Grabs your attention. But to me it is not so confident, rather unpredictable...:
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi60.tinypic.com%2F28mg68h.png&t=637&c=4tYCdx-9sd1NJA)
The last one, blue: Combining unusual colours in cryptocurrency. Skyblue and Yellow make me feel free and happy=)
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi57.tinypic.com%2F206zfop.png&t=637&c=Ph5lwl6W1PQ3fw)
Of course you can choose your own logo, but in case people will vote for my idea, they can also choose colour
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)