Creating a custom admin panel and filters for a custom taxonomy

Hello

I created a custom taxonomy called Colors , it has a text name but I am using description to store the HEX code for the color, I would like to have a custom admin panel so editors using the taxonomy can see the actual color and select terms using checkboxes instead of writing...

Also I would like to be able to filter posts by taxonomy terms

if you guys can provide some code or doc to see how this should be implemented would be nice

Thanks

Adrian