I decided on my new bag too (since I'm steadily ripping a hole in my now-ancient Timbuk2) - black with red trim, red straps, and two rows of small D rings down the back in which to lace red elastic in xxxxx rows, corset style, at an angle so the row is vertical when the bag is on my back. Methinks it'll be HOT.
Now to decide on the size and which local custom bag maker to go with (Dank or Reload) I don't think I need a huge one, except for grocery day.