This guide shows how to design, build, and package 320×240 (QVGA) themes for Nokia C300-style phones using the NTH (Nokia Theme?) format (assumption: a simple image + config-based theme system). I assume you want "hot" visual styles (vibrant, warm, high-contrast) and practical, step-by-step instructions for assets, layout, and packaging. If your phone or theme format differs, treat this as a generic 320×240 theme workflow that you can adapt.
For the classic Nokia C3-00 and similar Series 40 devices (like the X2-01 or Asha 200/302), .nth themes often include custom icons, ringtones, and wallpapers. OS-Inspired Themes: 320x240 nth nokia c300 themes hot
In the forums of 2007–2012, “hot” themes shared a few traits: Guide: Creating 320×240 "NTH" Nokia C300 Themes —