UI Visual Tweaks

[samepant]

This is a general Issue to track UI tweaks, feel free to add more — but please add them as a checklist, so we can keep track of what's been fixed :-)

• [x] https://www.loom.com/share/dc01b21124e54404bbf37058dab6942f (thanks @cedricwaxwing)
  • [x] Realm center button hover states
  • [x] Cursor state on Color Picker and Stone Picker handles
  • [x] Hover style on Stone Picker
  • [x] Randomizer buttons shouldn't have hover state
  • [x] Stone in picker doesn't always match what's in the preview
  • [x] Visual feedback on color picker selection and card while dragging. (maybe throttle the drag event?)

[samepant]

fixed in #79