I use contrast themes in windows 11 to give more color to various applications , browser, explorer and all other applications. The contrast themes are great and you can edit them to any color combo you wish. I am not sure if contrast themes can be integrated into Mirc .
Mirc has great color options now. For some reason the white appears a little greyish but when I take a screenshot it is bright. I can not figure that out as it is only in Mirc that i have that problem.