Flash, that pic should be in a sticky somewhere. Was it staged? I can't imagine how else you got two identical smokers sitting side-by-side spewing billowy white and thin blue at the same time.
Something I would like to add, though: the appearance of smoke is going to depend on your light source. Most people probably have a good handle on what smoke is supposed to look like in daylight, but things change quite a bit in artificial light. Incandescent lights don't put out much blue light, and most CFLs are made to mimic incandescents. For more accurate color rendition, you need a light source that puts out more blue. Without getting too technical, there is a measure of the spectrum of a light source that is useful: it's called correlated color temperature (CCT), and is measured in Kelvins.
Daylight, noon: 6500K
"Full spectrum" fluorescent: 5500K
Typical fluorescent tube: 4100K
Incandescent light: 2700K
Here's a shot I took of the smoke coming out of my Weber kettle. The smoke is illuminated by a high-powered LED flashlight, roughly 3700K.
The smoke looks just a tinge bluer IRL. When it looks like this under the flashlight, I know it's just about right. It's been extremely windy tonight, which made it really hard to find a good moment to snap a picture. I hope this helps you figure out when you've got the right smoke!