Supposedly the color temp doesn't matter to the plants. I'm not convinced of that just yet, but here's a few tips: coralife makes a 10 watt, 6700k screw in power compact. Also, some Wal Marts carry a $5 knock-off of the coralife bulbs, so you might check them too. I think all-glass makes a 10,000k screw in PC, which would grow plants too.
Since a 10 gallon is kind of shallow, you might get some pretty good growth with just 20watts. I have 23watts over a 15Tall, and my cabomba is doing well...as is the algae.