custom color support for clean up helper

src/accessories/CleanUpHelper.ttslua

@@ -6,6 +6,7 @@ Cleans up the table for the next scenario in a campaign:
 --]]
 
 local tokenSpawnTrackerApi = require("core/token/TokenSpawnTrackerApi")
+local playmatAPI = require("playermat/PlaymatApi")
 
 -- enable this for debugging
 local SHOW_RAYS = false
@@ -296,7 +297,7 @@ function discardHands()
   for i = 1, 4 do
     local trashcan = getObjectFromGUID(TRASHCAN_GUIDS[i])
     if trashcan == nil then return end
-    local hand = Player[COLORS[i]].getHandObjects()
+    local hand = Player[playmatAPI.getHandColor(COLORS[i])].getHandObjects()
     for j = #hand, 1, -1 do
       trashcan.putObject(hand[j])
     end