Hi @nakul-py , thanks for trying to help. Unfortunately, the PR doesn't provide a fix for #1216 which concerns the use of system/adaptive colors in theme. 'pen' is one of them along with 'brush' and 'paper'.

Hi @alshan, "Thanks for the review. You can use any random color in place of 'color'. In this context, 'pen' may refer to a graphical object that controls how lines, shapes, and borders are drawn. The pen manages the thickness, style, and color of these elements, but it doesn't function as a direct color specification."