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From "Haohui Mai (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5852) Change the colors on the hdfs UI
Date Thu, 30 Jan 2014 07:30:09 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5852?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Haohui Mai updated HDFS-5852:
-----------------------------

    Attachment: color-rationale.png

Although I'm not an HCI expert at all, but I think it is worthwhile to document the rationale
of how the original colors are chosen.

If you look at the original colors at the HSL space. They have the same hues (ignoring the
rounding), with different values of saturation and light. The intervals between them are identical
to the ones on http://getbootstrap.com

Hue decides the primary color (i.e., green, yellow, orange). Green is chosen because the color
theory suggests that green color gives an impression of stability and relaxation. Another
reason is that from the HCI prospective, cold color schemes (e.g., green / blue backgrounds
+ white text) usually have good visibility on computer screens.

It is usually easy to see some code is better than the other, but it is subjective and subtle
to tell which color is superior. I'm pretty open on what color schemes should be used in the
UI, and I understand everybody has his / her favorite colors and I fully respect their choices.
I sincerely appreciate putting the time to reasoning about the changes from the HCI prospective
so that the end-users can have the best experience.

> Change the colors on the hdfs UI
> --------------------------------
>
>                 Key: HDFS-5852
>                 URL: https://issues.apache.org/jira/browse/HDFS-5852
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: stack
>            Priority: Blocker
>              Labels: webui
>             Fix For: 2.3.0
>
>         Attachments: HDFS-5852v2.txt, HDFS-5852v3-dkgreen.txt, color-rationale.png, compromise_gray.png,
dkgreen.png, hdfs-5852.txt, new_hdfsui_colors.png
>
>
> The HDFS UI colors are too close to HWX green.
> Here is a patch that steers clear of vendor colors.
> I made it a blocker thinking this something we'd want to fix before we release apache
hadoop 2.3.0.



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