Improve record color coding functionality

[nonsensicalthinking]

Remove external color lib and write intent to replace it.
Generate random colors on load.
Button to regenerate new color.
Check existing colors and make sure you're not reusing colors.
Show colors in the add record drop down.

[nonsensicalthinking]

Mostly implemented in commit 07a19a9

Still unimplemented:
Check existing colors and make sure you're not reusing colors.
Show colors in the add record drop down.