LyX ⇒ Colour all Theorems in LyX 2.0.1

[wyoung]

I am using LyX 2.0.1 to write a book.

1. Document class: book
2. Modules selected:
   • Theorems (AMS)
   • Theorems (AMS Extended)
   • Theorems (Numbered by section)

In my book, there are a lot of theorems. I'd like to colour them all in blue. Instead of highlighting the theorem one by one and changing the colour in the "Text Style" window, which is very time consuming, is there any way I can instruct LyX to colour all theorems in blue?