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https://issues.apache.org/jira/browse/GUACAMOLE-470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16309081#comment-16309081
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Michael Jumper commented on GUACAMOLE-470:
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I like the idea of expanding the functionality of the "color-scheme" parameter
while maintaining backward compatibility. I'm not 100% behind the idea of a
whole set of commands for setting the values of specific color indices, but I
like the direction this is headed in principle.
Leveraging the same foreground/background color formats as xterm (the formats
used by X11 in general, actually) makes sense for the terminal, particularly
now that the terminal shared by the SSH and telnet support has its own support
for parsing these color strings.
> Make individual terminal colors configurable through "color-scheme" parameter
> -----------------------------------------------------------------------------
>
> Key: GUACAMOLE-470
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-470
> Project: Guacamole
> Issue Type: Improvement
> Components: SSH, Telnet, Terminal
> Reporter: Jim Chen
>
> I'd be happy to work on this feature if the maintainers think it's a good
> idea.
> Currently, the "color-scheme" parameter in the configuration xml can only
> choose one of four color schemes. It would be nice if it can also configure
> individual colors, so that more customized color schemes can be chosen.
> I propose to make the "color-scheme" parameter a series of semicolon
> separated commands, e.g. "{{black-white; color2: rgb:cc/33/22; ...}}", where
> each command specifies a color-set or a single color. This new format would
> be backward-compatible with the previous format, because previous values like
> "{{black-white}}" would be interpreted as a single command.
> Possible color-set commands are same as before: "{{black-white}}",
> "{{gray-black}}", "{{green-black}}", and "{{white-black}}". These commands
> set the foreground-background colors to existing values.
> The single-color commands are "{{foreground: <color>}}", "{{background:
> <color>}}", and "{{color<n>: <color>}}", where {{<n>}} is a number from 0 to
> 255, and {{<color>}} is a color value in the format {{rgb:RR/GG/BB}}, which
> matches the format used by xterm. These commands set the specified color to
> new values.
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