Cloud9 JetStream is a dark theme with Cloud9 blue accents and tuned syntax highlighting. JetBrains says it is designed to feel familiar to Cloud9 fans while staying practical for daily development work.
This is not a core language or AI feature, but it is still a meaningful developer-tool update because it shows how JetBrains keeps the IDE ecosystem lively. Custom themes and Marketplace distribution are part of how JetBrains keeps users inside the platform and gives teams a lighter-weight way to personalize their environment.
Install Cloud9 JetStream from the JetBrains Marketplace, then apply it in your IDE theme settings. If you manage a team, this is also a reminder that visual consistency and editor comfort can be low-cost productivity wins.
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