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Any of these look good for Skirmish?

If You made up your own missions- sure why not?

They are ok for skirmish. A bit big. Star Wars Miniatures default movement was 6, not 4. The color codes are red is impassable, green is difficult, and blue squares are doors. I don't use them anymore since my Star Wars minis days.

Rikalonius is right about the base movement being 6, rather than 4. But otherwise, they can work fine. Here is what I wrote in another thread on the same topic ( 3rd Party Sci-Fi Maps Available) :

On ‎2‎/‎19‎/‎2018 at 10:47 PM, thereisnotry said:

Yep, these maps are great. I played SWM for many years (and still dabble in it a bit), and these maps can be very workable for IA. There are literally dozens of maps available if you can get your hands on them. In Campaign play, that can make for a lot of different create-your-own-Campaign adventures. In Skirmish play, that opens up a whole pile of interesting new missions (but you'll need to come up with Mission objectives for each map).

One thing is worth mentioning: SWM maps generally have quite a bit more open space than IA maps do, so you'll find that some of the gameplay might work out differently.

Conversions to make the markings on SWM maps work for IA:

• Green lines : Low objects (crates, desks, etc). In SWM this provides cover, but for IA it should just count as Difficult Terrain (ie, Blue squares).
• Yellow lines : Difficult terrain (stairs, rubble, etc). Again, in IA this simply counts as Difficult Terrain ( Blue squares).
• Pink/Magenta lines : Walls . Treat them as the thick Black lines on IA maps (ie, nothing can move through it, not even Massive Mobile figures).
• Orange lines : Pits . These are relatively rare on SWM and should count as Red squares/lines on an IA map. That is, Mobile and Massive figures don't tend to care about them. Although, because of how some pits are designed in maps, might need to make a rule that a Massive figure must always be standing in at least X squares of non-pit squares (X = 2-4??)
• Light-Blue Squares : Doors . Doors work differently in SWM than they do in IA, and they can be anywhere from 1-square long to 4-5 or more, and they can sometimes also be oddly shaped. However, don't let that throw you: you can treat them the same as normal IA doors (ie, once they're open they stay open) and everything will work fine.

I hope you have fun with them!