Yes, I went DYI and inverted the colour for the part on the normal texture for the right side of the canopy frame.
This texture is for: \Eagle Dynamics\DCS World OpenBeta\Mods\aircraft\AJS37\Textures, directory. LNS_VIG_CPT_FRAME_R_N.zip
Fixing canopy frames isn't part of the start-up checklist but it does eliminate the puzzle.
Regards.