If anyone with the CE has been holding off using the two dyes that came with the CE, I just found out that each vial you get with your characters has unlimited uses. There's been a few posts on the Diablo 3 forums to confirm this but I didn't read them till now and thought I'd post this here in case anyone else wasn't getting max bang for buck from their CE purchase.
And, yes, I've been making new characters and deleting them just to collect more bottled smoke and bottled cloud dyes.
The two colours work pretty well together. Bottled Smoke is a dark grey colour while Bottled Cloud is more of a creamy white. Currently got my DH with a dark grey hood, shoulders, boots and pants, and then the creamy white cloak and gloves. Doesn't stand out as much as the reds etc but I reckon this suits the character more.