Matt, Sherwin-Williams will mix a quart of industrial alkyd enamel in the more basic colors. I am sure your Jet off-white could be matched perfectly. Instead of spraying, roll it on the outside surfaces of your mobile stand with a foam roller. You will be surprised at the nice finish it gives with slower drying enamel. Of course, some tight places will have to be brushed, but won't be in plain view either.