Possible Clues:

• Idle character collecting books, rather steamy!
• Hot and heavy
• Blue, in a way
• Provocative, in a way
• Rio, etc., switched for a bit of passion
• Name covering gold that's turned blue
• Concerned with sexual desire, solicitor expertly reviewed evidence in case
• Amorous hero ticks boxes
• Stimulating
• Amorous heart flipped about sex