Cosmetic fixes for stdout, especially colorization

This commit features a lot of color tweaking, specifically:
 * phases are now darker so "Success" and "Failure" stands out
 * More distracting color arrows were removed
 * The summary colors are moved to just the numbers and not the labels
 * The slave colors were completely reworked with the brighter colors
   coming first, followed by their darker analogs start with slave #8
 * The build summary was broken into 3 lines
   - 1st line: [jail] [timestamp] [global state] Time
   - 2nd line: "Initially" "Built" "Failed" "Ignored" "Skipped" values
   - 3rd line: "Remaining"
   This is to be nice to 80-column displays.  Notice how "Initially" and
   "Remaining" have same number of letters, this is for alignment
   purposes too
 * Several colons were de-colorized