Vamooses Dye Studio

**Live mode**
- The recent-dyes strip from v1.x is back: the last 12 dyes you applied in
  live mode show as clickable swatches under the action bar. Click one to
  re-apply it to the focused slot. Recents now persist across sessions
  (account-wide) instead of resetting on logout, and the strip holds 12
  (up from 10 in v1.x).
- The Cancel button is now "Revert" -- it puts every slot back to the last
  applied state and keeps you in customize mode, so the old name oversold
  what it did. It also greys out until you have pending changes, mirroring
  Apply (and unlike Apply it stays clickable when a staged dye is unowned,
  since reverting costs nothing).
- When Apply is locked because a staged dye isn't in your bags, its text now
  turns the same red as the unowned slot row, and hovering it tells you
  exactly which dye(s) you're missing -- no more wondering why the button
  won't light up. (The game would silently revert unowned dyes on commit;
  that's why the gate exists.)
- Fixed a long-standing bug where a disabled button (usually Apply) could
  render with full-brightness text after a theme repaint, making it look
  clickable when it wasn't.