SotSS is a 4x/RTS mod based on the Universe of Freelancer/Starlancer
The Monarch has many particle cannons on it's prow, as well as a dual super heavy particle cannon, and two single barrel super heavy particle cannons.
Added to that is two dual long range ship-to-ship missile launchers for long range standoffs and then a ten-tube stalker missile launcher for each side (for swatting pesky fighters)
Nice shot.
It seems the guys at space dock who built this particular monarch painted it in rainbow colors since they could not keep track of what colors they used..
I think they should be ejected into space for ruining a grand moment.
the blue tinge you see is the shield fx, as for the red and gold it's a Bretonian thing