Offset D50B6 and now:
98 7F = ice color.
BD 7F = center area of the lights reflection and nets / glasses seams
BA 7F = lights reflection and shades of the glass at the bottom of the rink / ice in the referee window
7B 6F = menu frame, letters (menu, team abbreviations, time, players...), part of the goal posts, face off spots, thin white lines surrounding red lines, circles and semi-circles around the goals
00 00 = do not edit, almost all black used in the arena, audience, menus
D6 5A = rink boards, upper area
AD 35 and 29 25 = do not edit
DB 5A = thin lines surrounding red lines, face off spots (four pixels)
5F 4A = red lines and circles, referee's faces
3B 35 = red lines, circles and face off spots, referee's faces
4D 6E = blue lines, star indicators, centre of the puck
DB 12 = boards (bottom area) and „walls“ behind the benches
D2 7E = blue lines, star indicators, crease, GOAL font (in the box with a scoring player and assists)
84 10 = do not edit
72 7F = blue lines, star indicators, crease
"Do not edit" values and other values behind 72 7F are values for referee's uniform, menu background, audience or for the graphics I did not spot.
If you want to alter colors of the original graphics and my description is not good enough, alter the original values to 00 00 (black color) and you will have an idea what graphics are affected by the values above.