According to the search results, there are different answers to the question of what color shirt Huey wears. Here are the different answers found:

• In a YouTube video titled "What Color Shirt Does Huey Wear," posted on October 21, 2023, Huey is dressed in red.
• In another YouTube video titled "What Color Shirt Does Huey Wear," also posted on October 21, 2023, there is no clear answer as the video is about personalized t-shirts.
• A Reddit post from February 18, 2020, suggests that Huey wears an oversize cream shirt.
• A post on DISboards.com from August 9, 2004, states that Huey wears a red shirt.
• A post on Google Groups from October 11, 2023, states that Huey wears a red shirt, but also notes that the nephews clothing colors have been inconsistent in the past.
• The Disney Wiki page for Huey, Dewey, and Louie states that Huey wears a long-sleeved shirt inside his normal T-shirt, but it does not specify the color of the T-shirt.

Therefore, there is no clear answer to what color shirt Huey wears, as different sources provide different answers.