Hot Potato Game Tutorial: Yellow Hint Code Highlights Have Poor Visibility in High Contrast Mode

[Nina-1210]

Describe the bug
In the Hot Potato JavaScript tutorial under the Games section, the hint code highlights displayed in steps 3 and 7 use a yellow highlight color that becomes difficult to distinguish when High Contrast mode is enabled.

Steps to reproduce the behavior:

1. Navigate to https://makecode.microbit.org/beta.
2. Set the theme to High Contrast.
3. Open "Hot Potato" JavaScript tutorial under Games section.
4. Goes to steps 3 and 7 and observe the yellow-highlighted hint code.

Actual behavior
The yellow-highlighted hint code in steps 3 and 7 are hard to see in High Contrast mode.

Expected behavior
The yellow-highlighted hint code in steps 3 and 7 should remain clearly visible and readable in High Contrast mode.

Screenshots

Additional context
1.OS: Windows 11 25H2 & Mac Mini M2 macOS Tahoe 26.4.1
2.Browser: Chrome, Edge, Firefox, and Safari
3.Makecode.microbit.org version: 8.1.10
4.Microsoft MakeCode version: 12.3.5

[Nina-1210]

This issue can also reproduce on the step 7 of the Hot Potato Python tutorial.