The matrix below, by contrast, shows the EHIEP color schema, based on a number of studies of vowel phonaesthetic qualities, or felt sense, and related neurophysiological properties of the visual field. (See several earlier posts.) In essence, front and higher vowels are lighter; lower and back vowels are darker. The EHIEP vowels are displayed as a mirror image of the standard IPA vowel chart (which the Color Vowel Chart represents in standard format.)
Notice some of the interesting correspondences/contrasts between the two systems:
(a) The colors green and black are in the same positions,
(b) The "central" vowels are very similar in character, although not similarly aligned, and
(c) The diphthongs have some parallels. In CVC, "oy" is turquoise; in EHIEP it is blue to white. In CVC, "aw" is brown; in EHIEP, brown to green. In CVC, "ay" is white; in EHIEP, brown to white.
(d) In both CVC and EHIEP high vowels are lighter than low vowels.
(e) The CVC vowel color for "e" (red) is close to the EHIEP color (mid-front) of orange.
(f) The CVC vowel in "silver" would be white in EHIEP.
(g) The CVC for "blue" would be green or green to purple in EHIEP.