Mullions
Usman Akeju, Albert Lin
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 greenThe triangle paths (thanks to Mayhem for the image!):