the color of the light has nothing to do with it. be it red, blue, green, or whatever color, its just LED. usually pag walang color, its laser. its just some finer details that differentiate them. like yung sa logitech nga, those that work on glass surface, they call it darkfield.
The difference is just the sensor type. A manufacturer may build any mouse they want around either sensor type.
Laser mice likely use a laser diode as the light source while optical mice usually use a regular light emitting diode, sometimes near infrared.
Laser mice may have a higher DPI, which translates to tracking smaller features or faster cursor movement rates. This has more to do with the way the information is being processed than the light source being used, so optical mice can have high DPI, it's just not the same selling point.
Ultimately, whether the mouse uses a laser or just plain old optical is irrelevant, as that's not all there is to it. Take Microsoft's Bluetrack mice for example. Optical, but tracks better on most surfaces than even my Logitech laser mouse.
bottomline, choose the one that fits your budget and suits your needs. in your case, since gusto mo it will work on glass, then you will have to get the glass laser type. take note, hindi lang logitech ang merong ganun. other companies just use a different term for it (i.e. I used a razer before and the mousepad I use is glass though its designed as mousepad, meaning frosted ang baba hindi clear)
also kaya tinanong ang budget kasi hindi mura yung logitech MX series (those that use darkfield), the cheapest is around 60+ USD that converts to 3k php (or more depending on the shop), and for a mouse, nasa high end na yang presyo na yan hindi na yan mid range
PS
worth a read
http://www.pcgamer.com/gaming-mouse-myths-busted/