Hovercraft are nearly indistinguishable across different companies.

[SamuXarick]

Using OpenGFX 7.1. There's only a very thin line around the skirt that is company coloured. Hard to see.

[glx22]

Maybe the propellers could use company colour.

[zephyris]

Fixed in OpenGFX2. The sprites could be ported back to OpenGFX if someone wants to.