Cleanup/refactor remaining theme styles 2

[khang-nd]

@khang-nd:

• basic1 - 4
• chromeos
• macos
• win8 + 8.1
• win10
• win31
• win95 + 98 + 2k
• winXP (all variants)

[khang-nd]

@hohaicongthuan FYI, I'll need your help to visually check the themes I did with this one. Just need to look through the themes in the app (not code) and let me know if any issues or anything that I missed. I'll let you know when it's time 🙏

[khang-nd]

Remaining:

• chromeos
• macos
• winvista
• winLP + winLS (review)
• winW (review)