Hi, here are my concepts for a futures/stock trading business. I went with the standard red for a down day, black for another down day that finished higher, and then a white up day, with growth ahead. They also create a letter "E" to accentuate the name of the company. I tried one with all blues just for another look to it. I hope this is on the right track. I'm willing to play around with the idea more if it's not quite what you need.
Thanks
W