JTree Node Color, to distinguish between different activities

[H.C. Satish]

Hi,
Situation:Dynamic JTree (Tree is constructed from as a result of Database). User has the option to either Enable / Disable node and can repeat the activities but restricted only one activity per node, the node is to be highlighted; to restrict the user from further activities.
Problem:Am a newbie to swing, after searching the forum for the same, i found few good solutions which are specific to color change of specific selected node, in a temporary context.
But we need the node color change within a same level; to distinguish either the node is either enabled / disabled.

Your help is appreciated,