Dual channel just means two sticks of ram running at the same speed to increase data transfer. Basically the bus width that RAM transfers is 64-bit and when on Dual Channel it becomes 128-bit. The colors on mobos are just used to help the buyer know which slots are Dual Channel. Usually its 1,3 and 2,4 for Dual channel however mobos are different.
You would think this would make ram twice as fast but not really, I ran single channel for 2 months with a single stick and then when i got a second stick I noticed no difference with dual channel.
E6300 w/ Arctic Freezer Pro 7 @ 3.6ghz 1.4Vcore
Antec 900 Case
EVGA 750i FTW Mobo
4x1GB of G.skill DDR2-800
2 8800GT in SLI
22" Samsung Syncmaster
1 250GB WD and 1 Seagate 7200.10 in RAID 0
Corsair 520HX 3DMark06 Score: 13900