The order......in the DC metro poster................Red, Orange, Blue, Green, Yellow, Silver..........it is in the exceptions that i think i know what they are referring to..................

So.......u have the presence of roy g biv and the 3 primary colors..........evenly spaced out.......the presence of silver..........or grey.......a mix of the other two primary colors.........black and white..........so........to me................................light and paint..........physics and art.......................since we know blue and yellow mix go make green........orange is an exception............in paint...............what might be the imp. of orange...........Orange Barrel Media......is a code.........on the DC metro screens.....outdoors......at Gallery place........................Barrels.......oil...........also if blue light is more intense than green light..........but in their order........green is more imp. than blue.............money.............us paper currency is money..........banking..........finacial notes........politics is run by money........the illuminati..........yellow is more intense than green.........Nature...................Frank Lloyd Wright was asked what his religion was.......he said Nature.............................












Anyways.............what might be significant in that order..................well if u start Red then Orange..........that is the start of Roy g biv..........but green should come before blue............silver is last...........the South is in charge..........

A painter's palette..................the list in the DC metro poster is not in that same order as below.............they have it........Red, Orange, Blue, Green, Yellow, Silver..........................

Line Name	Opened	Stations	Distance		Termini
			mi	km	Western/Southern	Eastern/Northern
Red Line	1976	27	31.9	51.3	Shady Grove	Glenmont
Blue Line	1977	27	30.3	48.8	Franconia–Springfield	Largo Town Center
Orange Line	1978	26	26.4	42.5	Vienna	New Carrollton
Yellow Line	1983	17	15.07	24.25	Huntington Franconia–Springfield(Rush+)	Mount Vernon Square (rush hours) Greenbelt (Rush+) Fort Totten (other times)
Green Line	1991	21	23.04	37.08	Branch Avenue	Greenbelt
Silver Line	2014	28	29.6	47.6	Wiehle–Reston East Ashburn (opens 2019)	Largo Town Center

There are also definitions (or categories) of colors based on the color wheel. We begin with a 3-part color wheel.

Primary Colors: Red, yellow and blue
In traditional color theory (used in paint and pigments), primary colors are the 3 pigment colors that can not be mixed or formed by any combination of other colors. All other colors are derived from these 3 hues.