Error: "missing color"

[jzaefferer]

Another one:

Jul 13 10:23:12 builder-01 download.jqueryui.com[18292]: User request exception: Error: missing color#012
    at Object.Image (/var/www/download.jqueryui.com/node_modules/jquery-ui-themeroller/lib/themeroller-image.js:210:10)#012
    at Object.ThemeRoller._iconUrl (/var/www/download.jqueryui.com/node_modules/jquery-ui-themeroller/lib/themeroller.js:204:15)#012
    at Object.ThemeRoller (/var/www/download.jqueryui.com/node_modules/jquery-ui-themeroller/lib/themeroller.js:143:26)#012
    at Package.extend.jquery-ui.theme.css (/var/www/download.jqueryui.com/lib/package-1-12.js:238:22)#012
    at /var/www/download.jqueryui.com/node_modules/node-packager/index.js:117:49#012
    at Array.map (native)#012
    at new Packager (/var/www/download.jqueryui.com/node_modules/node-packager/index.js:86:42)#012
    at Object.Frontend.create (/var/www/download.jqueryui.com/download.js:146:16)#012
    at /var/www/download.jqueryui.com/server.js:80:22#012
    at IncomingForm.<anonymous> (/var/www/download.jqueryui.com/node_modules/formidable/lib/incoming_form.js:117:9)#012From previous event:#012
    at /var/www/download.jqueryui.com/node_modules/node-packager/index.js:87:20#012
    at Array.map (native)#012
    at new Packager (/var/www/download.jqueryui.com/node_modules/node-packager/index.js:86:42)#012
    at Object.Frontend.create (/var/www/download.jqueryui.com/download.js:146:16)#012
    at /var/www/download.jqueryui.com/server.js:80:22#012
    at IncomingForm.<anonymous> (/var/www/download.jqueryui.com/node_modules/formidable/lib/incoming_form.js:117:9)#012
    at IncomingForm.emit (events.js:104:17)#012
    at IncomingForm._maybeEnd (/var/www/download.jqueryui.com/node_modules/formidable/lib/incoming_form.js:377:8)#012
    at QuerystringParser.parser.onEnd (/var/www/download.jqueryui.com/node_modules/formidable/lib/incoming_form.js:350:10)

I have no clue what's going on here. There's no obvious workaround this time.

[rxaviers]

What's the css file used when this error occurred?

[jzaefferer]

No idea. I suspect the other errors have the same source though, and we're only poking at the symptoms. We need better logging.