20x110 HS Mk3 projectile


got this empty one, but I don’t know much about it and need some help.
The body is marked with: MK3 54J LOT 1214 MAT
And the fuze: MK-26-1-JDOCO-P (don’t know if I read it correctly)

Body made in 1954 by MATEWSON TOOL CO 193 MARSH HILL ROAD ORANGE, CT 06477, right? But the fuze (Mark 26 Mod 1)?

The main problem are the colors. They seem a little too intensive. And the fuze should not be painted yellow, right? As well as the “HEI” should be normally black.
So, is the paint a fake? Or is it just a variant?

Best regards