everything i am new to extjs. I am using extjs 4.2.1. and in ExtJS docs there is one new tab "CSS Vars". but I cannot set up the configuration of variables in the usual way. Can someone suggest me how to change the default CSS behavior for extjs (4.2.1) using CSS vars?
For example, I want to set the background color of a panel using $ panel-body-background-color. Then how can I install in the panel configuration? I get an error in the order of the code.
xtype:'panel', border:true, $panel-body-background-color : 'black'
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