In Java edition: Pillager eyes are green, and Vindicator and Ominous Banner eyes are blue.
In Bedrock edition: Pillager and Vindicator eyes are green. But the Ominous banner eyes are blue.
In Minecraft Dungeons: Pillager, Vindicator and Ominous Banner eyes are blue.
Before the new textures were fully implemented, the vindicator had blue eyes. Now they have green eyes. In Java, snaphsot 18w47a resolved the Java counterpart of this bug as 'Fixed'.
In Bedrock edition, All Illager’s eyes are green, including Vindicator (In Java edition, Vindicator’s eyes are blue). However their banner shows blue eyes instead of green eyes.
In Java this issue (
MCPE-43198) have been fixed:
The vindicator now has green eyes. Before the texture update, they were blue.
In the spin-game Minecraft Dungeons, Vindicator and Pillager eyes are blue.