Mullions

Usman Akeju, Albert Lin

SOLUTION:

Follow the paths of the colored triangles and discover that they range in length from 4-17, with one path for each value in that range. Then take the answer words and lay them on the path since they range from 4-17 letters in length. Plucking the letters in the strip of triangles at the bottom of the images gives you the answer:

RGB OF RELIQUARY

The answer-words, the path colors, and the letters taken are below. The first number is the total length of the word and the second number is the letter plucked.

R 15: INTERCHANGEABLE 5 dark purple
G 12: INTERLININGS 11 light blue
B 10: BABEWYNERY 1 dark green
O  9: JNFORSTER	4 bright green
F  6: FENNEL 1 orange
R  4: GRUE 2 red
E 11: ACKNOWLEDGE 8 gray
L 13: BOUILLABAISSE 5 yellow
I 14: KNICKERBOCKERS 3 bright purple
Q  8: QUAGMIRE 1 brick red
U 16: CIRCUMNAVIGATION 5 white
A  7: ETAMINE 3 pale pink
R 17: CONVERSATIONALIST 6 blue
Y  5: BOYES 3 pale green
The triangle paths (thanks to Mayhem for the image!):

Answer: RGB OF RELIQUARY

Map Transform: On the Vatican map, the RGB encoding (in decimal) of the reliquary gives you a fire extinguisher ID code where the titantic boarding pass piece is hidden.