Final answer:
The provided reference texts do not include information about Pam's sweatshirt and the details it carries. Therefore, it's not possible to accurately answer what is on Pam's sweatshirt she wears to paint the mural.
Step-by-step explanation:
The question asks what is on Pam's sweatshirt that she wears to paint a mural. The provided text, however, does not give a specific description of Pam's sweatshirt or the details that are on it while she is painting.
Instead, the references provided mention various artists and their works, such as Beatriz Milhazes and her painting Mariposa, Troy Mathews' mixed media work, Lee Krasner's Polar Stampede, and Jackson Pollock's The She-Wolf. Without specific information about Pam's sweatshirt from the texts, we cannot confidently provide an accurate description.