[BUG] Some vehicles show incorrectly rendered equipment sprites

[FilmBoy84]

In the most recent builds, the sprites for some vehicle weapons and equipment on the cityscape UI is incorrectly shown; using the wrong palette colours

For example, the GLM air defence launcher on the Griffon below is heavily green!

[KometFox]

Can confirm, happens with Rumble Cannon and with the Dimension Gates too.

[FilmBoy84]

See also #1054 and #689