Creating a Custome UI element

[cdslaughter]

I have read threw most of the UIBuilder doc, and have a few questions I hope someone can answer.

I want to create a new element that has a data grid in it. Each of these data-grid cells will represent a hot-key from an existing hotbar (I will still use the hot-bars, like normal). I will be setting the foreground tint to match the state of that hot-bar item (Red-out of range, Blue-no power, grayout-not ready).

Any input on how to apply onclick actions and changing the colour of that single cell would be greatly appreciated.

Thanks