Sky box color offsets for German Version are:
Location
Original Value
Address
Front End
FF FF FF FF
??????
Board Park
00 00 00 00
??????
Main Island
FF FF 00 00
64107
Pepper's House
FF FF 00 00
1CD258
Information Center
00 00 00 00
???????
Whack-a-Bot
00 00 00 00
???????
Castle Island
66 99 FF 00
EF40A
Brick Dive
FF FF 00 00
1346A6
Jousted
66 99 FF 00
1E26FE
Raging Bull
66 99 FF 00
1496BA
Adventures' Island Overworld
FF FF 00 00
209279
Adventures' Island Desert
FF FF 00 00
2182BB
Snake Pursuit
FF AA AA FF
370C82
Adventures' Island Pyramid Area
FF FF 00 00
245E18
Whack-a-Snake
-- -- -- --
???????
Matching Mummies
00 00 00 00
???????
Desert Speedster
FF FF 00 00
28435E
Fishing
FF FF 00 00
41F528
Bi-Plane
FF FF 00 00
331E27
Dino Park
FF FF 00 00
18EBB1
T-Rex Racing
E1 CC CA 00
170264
Mr. Hates' Camp
A6 E8 FF 00
2B9D94
Centrifuge
00 00 00 00
???????
Parachute Training
FF FF FF FF
???????
Asteroid Belt
00 00 00 00
???????
Parachute Onto Ogel
00 00 00 FF
???????
Ogel
00 00 00 00
???????
Make-A-D-Pizza
FF FF FF FF
???????
Brickster's Palace
00 00 00 00
???????
Whack-a-Snake is NOT 3C4D0B (in the German version it would either be 3DACAB or 3DB2A4), it will crash the game when playing this mini game, I don't even know if there is a blue sky box at all, because it's impossible to see it.