Emulator

Game Name?
Mario Power Tennis (GC)

Game ID?
GOME01

What's the problem? Describe what went wrong in few words.
Some objects are darker than they likely should be.

What did you expect to happen instead?
Objects to be shown with appropriate lighting.

What steps will reproduce the problem?

1. Start the game
2. Proceed through menus to the menu displaying "Start"
3. Note that the court is significantly darker than it likely should be.
4. Start the game and score
5. Note that the scoreboard is darker than it likely should be.

Dolphin 3.5 and 3.5-367 are old versions of Dolphin that have
known issues and bugs, so don't report issues about them and test the
latest Dolphin version first.
Which versions of Dolphin did you test on?
4.0-5295

Does using an older version of Dolphin solve your issue? If yes, which
versions of Dolphin used to work?
Unsure

What are your PC specifications? (including, but not limited to: Operating
System, CPU and GPU)
Windows 7 x64, Intel Core-i7 960, nVidia GeForce 580

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)
https://wiki.dolphin-emu.org/index.php?title=File:Mario_Power_Tennis-Dark_objects_1.jpg
https://wiki.dolphin-emu.org/index.php?title=File:Mario_Power_Tennis-Dark_objects_2.jpg

[Do not attach files to this issue. Upload them to another site and
link here. Use imgur.com for images and pastie.org for logs. Monitor the
email address that was used to create this issue.]