The colors of Silver Dragons Stables are silver and green.
Per Solaris VII Map Pack, p. 29.
Other References:
Wolverine, Map Pack Solaris VII (cover)
Berserker, Technical Readout: 3055 Upgrade (cover)
The Silver Dragons Stables insignia is a rampant silver dragon against a green field. Per MapPack: Solaris VII, page 29.