A high-quality theme pack curated for 6.60 usually includes a mix of "Conversion" themes and "Original Concept" themes. Here are some fan favorites often found in these collections:
Perfect for users who want a mobile-phone aesthetic with grid-based icons. psp ctf theme pack 660
All CTF files must be placed in ms0:/PSP/THEME/ . What’s Inside a Great 6.60 CTF Pack? A high-quality theme pack curated for 6