To increase variety a bit, newly purchased ships could have a chance to come with a base paint randomly picked from the "Vibrant" packs. That may also encourage store purchases in some cases
Maybe lock the random choice to the account to prevent Free Vibrant Pack Syndrome¹ (so e.g., a Viper Mk3 would always be either base paint or blue, while any Beluga bought by that player would have the choice of base paint or purple).
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¹ On that note, I would not be opposed to have the Vibrant packs just freely available, or have them as a single one-time purchase covering all Vibrant packs ever as they become available.
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¹ On that note, I would not be opposed to have the Vibrant packs just freely available, or have them as a single one-time purchase covering all Vibrant packs ever as they become available.